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  • China lands a rocket first stage for the first time with Zhuque-3

    Why in the News

    China has recovered the first stage of a rocket on land for the first time, using the reusable rocket Zhuque-3, which was launched on Wednesday morning. It is the country’s second rocket stage recovery overall, after a sea platform recovery in July, and the first to use deployable landing legs. State media described the result as a major breakthrough in the country’s reusable rocket technology.

    What is a reusable rocket?

    1. About: A reusable rocket is a launch vehicle whose stages are recovered intact after flight and flown again, instead of being discarded once the payload is delivered.
    2. Why it lowers cost: The first stage carries most of the engines and structure, so recovering it avoids rebuilding the most expensive part of the vehicle for every launch.
    3. How recovery works: The stage separates after boost, reorients, uses engine burns to slow its descent and lands vertically on a pad or on a sea platform.
    4. What landing legs add: Deployable landing legs stabilise the stage at touchdown on ground, which is why their first use is treated as a distinct technical milestone.

    What did the Zhuque-3 flight achieve?

    1. Launch and recovery: Zhuque-3 was launched on Wednesday morning and its first stage was recovered afterward.
    2. First on land: This marks China’s first successful recovery of a rocket first stage on land.
    3. Second overall: It is the second time the country has recovered a rocket stage, following a successful recovery on a sea platform in July.
    4. New hardware: The recovery marked China’s first use of deployable landing legs.
    5. Official assessment: The state news agency deemed the result a major breakthrough in the country’s reusable rocket technology.

    How does this compare with earlier recoveries?

    1. China’s July recovery: On 10 July, the first stage of a Long March-10B rocket separated from the second stage after lift off and returned to a platform at sea.
    2. The difference land makes: A sea platform recovery avoids overflight of populated areas, while a land recovery removes the need for a recovery vessel and shortens the turnaround.
    3. United States, SpaceX: SpaceX has been recovering rockets since 2015 and has driven down launch costs by reusing hardware that would otherwise be discarded after carrying satellites and other payloads toward space.
    4. United States, Blue Origin: Blue Origin has likewise been recovering boosters since 2015, establishing vertical landing as a repeatable rather than experimental technique.
    5. What the comparison shows: China is closing a capability gap that has stood for a decade, and the operator here is a private launch company rather than the state programme.

    Why does reusability decide launch economics?

    1. Cost per launch: Reuse spreads the cost of building a stage across several flights, which is the single largest lever on the price of access to orbit.
    2. Launch cadence: Recovery shortens the interval between flights, which matters for deploying large satellite constellations.
    3. The payload penalty: Propellant reserved for the landing burn and the mass of legs and grid fins reduce the payload the same vehicle can carry.
    4. The break even condition: Reuse pays only when the same stage flies many times, so refurbishment cost and inspection time determine whether the saving is real.
    5. Strategic consequence: Cheaper and more frequent launch capacity translates directly into faster deployment of communication, navigation and remote sensing assets.

    Conclusion

    Zhuque-3’s flight gives China its first land recovery of a rocket first stage and its second stage recovery in six weeks, after the Long March-10B sea platform recovery of 10 July. The flight also carried the country’s first use of deployable landing legs, which is the hardware element that makes routine ground landings possible. The state news agency has called it a major breakthrough in reusable rocket technology. The next measure of the achievement is whether the recovered stage is refurbished and reflown, since recovery without reflight does not deliver the cost saving that reusability exists to produce.

    “[2016] What is ‘Greased Lightning-10 (GL-10)’, recently in the news?

    (a) Electric plane tested by NASA

    (b) Solar-powered two-seater aircraft designed by Japan

    (c) Space observatory launched by China

    (d) Reusable rocket designed by ISRO

  • Vizhinjam International Seaport begins full-scale EXIM operations

    Why in the News

    Kerala’s Vizhinjam International Seaport began full scale export and import operations, moving India’s first dedicated deepwater transshipment terminal from handling mother ship calls to regular cargo work. The shift tests whether a domestic deepwater port can pull back the transshipment cargo that Colombo, Singapore and Salalah have historically handled for India.

    What is the Vizhinjam International Seaport?

    1. About: Vizhinjam is India’s first dedicated deepwater container transshipment port, located near Thiruvananthapuram on the southern tip of Kerala.
    2. Ownership model: It is developed on the landlord port model, with the Government of Kerala owning the asset and a private concessionaire building and operating the terminal.
    3. Concession: The concession agreement was signed in August 2015 for a period of 40 years, with provision for extension.
    4. Status in law: It is a non major port under the Government of Kerala, unlike the twelve major ports administered by the Union government.
    5. Automation: It is India’s first port to use a fully automated container handling system with remotely operated ship to shore cranes.
    6. Operational milestones: The first mother ship called in July 2024, commercial operations began in December 2024, and the port was formally dedicated in May 2025.

    What is transshipment?

    1. About: Transshipment is the transfer of containers from one vessel to another at an intermediate port before they reach their final destination.
    2. Why it exists: Very large mainline vessels call only at a few deep draft hubs, and smaller feeder vessels then distribute the boxes to shallower regional ports.
    3. The commercial value: The hub port earns handling charges twice on the same container, once on discharge from the mother vessel and once on loading to the feeder.

    What is natural draft and why does it matter?

    1. About: Draft is the depth of water a vessel needs beneath its keel, and natural draft is the depth a harbour has without dredging.
    2. Vizhinjam’s advantage: The site has a natural depth of about 20 metres close to the shore, deep enough to take the largest container vessels in service.
    3. The cost effect: A naturally deep harbour avoids the recurring capital and maintenance dredging bill that shallow Indian ports carry every year.
    4. The sedimentation factor: The site has minimal littoral drift, so the channel does not silt up at the rate seen at river mouth ports.

    What is Viability Gap Funding?

    1. About: Viability Gap Funding is a one time or deferred grant given by the government to a public private partnership project that is economically justified but not commercially viable on its own.
    2. Use here: Central and State assistance under this route covered part of the capital cost of the first phase of the port.

    Why has India depended on foreign transshipment hubs?

    1. Scale of leakage: A large majority of India’s transshipment containers have historically been handled outside the country.
    2. The dominant hub: Colombo in Sri Lanka has handled the single largest share of India’s transshipped boxes, aided by its position on the same shipping lane.
    3. Other hubs: Singapore and Salalah in Oman handle much of the remainder, along with Port Klang in Malaysia.
    4. The reason: Indian ports lacked the natural draft and the crane capacity to receive the largest mainline vessels, so mother ships called at neighbouring hubs instead.
    5. The cost: Routing a container through a foreign hub adds an extra handling charge and transit time on every box, and the associated revenue leaves the country.
    6. The strategic exposure: Dependence on a foreign port for the movement of national trade is a vulnerability during a diplomatic or economic dispute.

    What makes the Vizhinjam site suitable for a hub?

    1. Proximity to the shipping lane: The port lies about 10 nautical miles from the international east and west shipping route linking the Suez Canal to the Strait of Malacca.
    2. Minimal deviation cost: A short deviation from the mainline route means a mother ship loses little time by calling, which is the decisive commercial factor for a hub.
    3. Deep water close to shore: The natural draft of about 20 metres is available near the coast, which shortens the approach channel.
    4. Low maintenance dredging: Limited sedimentation keeps the recurring dredging requirement low compared with other Indian container ports.
    5. Southern position: Its location at the southern tip of the peninsula makes it the natural first and last Indian call on the route.

    What does the move to full scale export and import operations add?

    1. From transshipment to trade: The port moves from handling mother ship calls and transfers to handling India’s own export and import containers.
    2. Direct connectivity for shippers: Exporters in Kerala and neighbouring States can load on a mainline vessel without an intermediate feeder leg through a foreign hub.
    3. Time and cost saving: Removing a feeder leg cuts transit days and one round of handling charges from the door to door cost.
    4. Revenue retention: Handling charges, customs revenue and ancillary services are retained domestically rather than paid to a foreign hub operator.
    5. Feeder network effect: Regular export and import volume gives the port a base load that makes it more attractive for shipping lines to add services.
    6. Economic linkage: Full operations activate customs, warehousing, logistics and bunkering activity in the port’s hinterland.

    Challenges to the Vizhinjam International Seaport

    1. Hinterland connectivity: A hub needs rail and road links to move export and import cargo inland at scale. e.g. the dedicated rail link and the road connectivity to the national highway network for Vizhinjam are still being completed.
    2. Competition from an established hub: Shipping lines change hub calls only when the switch is commercially compelling. e.g. Colombo has long established feeder networks, bunkering and repair services that a new port must match.
    3. Fisher community livelihood: Port construction alters the coastline and affects traditional fishing grounds. e.g. the Vizhinjam project faced sustained protests by the local fishing community over shoreline erosion and loss of fishing access.
    4. Coastal erosion and shoreline change: Breakwaters interrupt the natural movement of sand along the coast. e.g. erosion at nearby Kerala coastal settlements has been attributed by residents to the breakwater and has required protective works.
    5. Concentration risk in a single operator: Container handling capacity concentrated with one private group reduces competitive pressure on tariffs. e.g. a single group already operates a large share of India’s private container terminal capacity.
    6. Cyclone and monsoon exposure: The Arabian Sea coast faces intensifying cyclonic activity that halts port operations. e.g. Cyclone Ockhi in 2017 caused heavy loss of life among fishers off the Kerala and Tamil Nadu coast.
    7. Capacity ramp up risk: Later phases depend on demand materialising at the pace assumed in the concession. e.g. the full build capacity target depends on winning transshipment volume currently committed to competing hubs.

    Conclusion

    India has for decades paid a foreign hub to handle its own transshipment containers, and Vizhinjam is the first Indian facility with the natural draft and route position to change that. The port has now moved from the transshipment calls it began with in December 2024 to full scale export and import operations from 18 August 2026, which gives it a domestic cargo base alongside transfer volumes. The next milestone is the completion of the later development phases and the dedicated rail and road connectivity that will decide whether the hinterland can feed the quay.

    Ports and Maritime Sector in India

    1. About: India’s port system handles the overwhelming share of the country’s external trade, moving bulk, break bulk, liquid and containerised cargo.
    2. Trade dependence: Around 95 per cent of India’s trade by volume and about 70 per cent by value moves through sea ports.
    3. Port structure: India has 12 major ports administered by the Union government and around 200 notified non major ports under State governments.
    4. Coastline: India has a coastline of about 11,098 kilometres across nine coastal States and four Union Territories, with an exclusive economic zone of about 2.37 million square kilometres.
    5. Location advantage: The peninsula sits astride the east and west shipping lane connecting the Suez Canal to the Strait of Malacca, through which a large share of world trade passes.
    6. Structural weakness: Indian ports have historically lacked deep draft berths, so mainline vessels called at foreign hubs and Indian ports were served by feeders.
    7. Institutional structure: The Ministry of Ports, Shipping and Waterways administers the sector, with State Maritime Boards governing non major ports.

    Constitutional Framework Governing Ports

    1. Entry 27 of the Union List: Covers ports declared by or under law made by Parliament to be major ports, including their delimitation and the powers of port authorities there.
    2. Entry 25 of the Union List: Covers maritime shipping and navigation, and provision of education and training for the merchant marine.
    3. Entry 31 of the Concurrent List: Covers ports other than those declared to be major ports, the basis of State jurisdiction over ports such as Vizhinjam.
    4. Entry 32 of the Concurrent List: Covers shipping and navigation on inland waterways as regards mechanically propelled vessels.
    5. Article 297: Vests in the Union all lands, minerals and other things of value underlying the territorial waters, continental shelf and exclusive economic zone.
    6. Entry 41 of the Union List: Covers trade and commerce with foreign countries and import and export across customs frontiers.

    Laws and Rules Governing Ports and Shipping

    1. Indian Ports Act, 1908: The long standing statute governing port limits, port dues, pilotage and safety of shipping at ports.
    2. Indian Ports Act, 2025: Enacted to replace the 1908 statute, updating port administration, State Maritime Boards, pollution control and dispute resolution.
    3. Major Port Authorities Act, 2021: Replaced the Major Port Trusts Act, 1963 and gave the twelve major ports autonomy in tariff setting and land management through Port Authority Boards.
    4. Tariff autonomy: The Act removed tariff fixation from the Tariff Authority for Major Ports for new projects, allowing market based rates.
    5. Merchant Shipping Act, 1958: Governs registration of Indian vessels, seafarer welfare, safety and marine pollution obligations.
    6. Customs Act, 1962: Governs clearance of imported and exported goods and the designation of customs ports and bonded warehouses.
    7. Marine Aids to Navigation Act, 2021: Replaced the Lighthouse Act, 1927 and modernised the framework for navigational aids and vessel traffic services.
    8. Coastal Regulation Zone Notification, 2019: Issued under the Environment (Protection) Act, 1986, regulating construction and port development along the coast.
    9. Inland Vessels Act, 2021: Provides a uniform national regime for registration and safe operation of inland vessels, relevant to port hinterland movement by waterway.

    Back2Basics: Sagarmala Programme

    1. Administering ministry: Ministry of Ports, Shipping and Waterways.
    2. Launch year: Approved in 2015 as the flagship programme for port led development.
    3. Aim: To reduce the logistics cost of export and import and domestic cargo by using India’s coastline and inland waterways more intensively.
    4. The four pillars: Port modernisation and new port development, port connectivity enhancement, port linked industrialisation, and coastal community development.
    5. Targeted beneficiaries: Exporters and importers, coastal shipping operators, port linked industrial clusters and coastal communities including fishers.
    6. Design feature: Projects are implemented by ports, State governments, central ministries and special purpose vehicles, with the Sagarmala Development Company providing funding support.
    7. Coastal community component: Funds fishing harbours, fish landing centres and skill development for coastal populations.

    Government Initiatives in the Maritime Sector

    1. Maritime India Vision 2030: Sets out the ten year blueprint for port capacity, connectivity, shipbuilding and inland waterways.
    2. Maritime Amrit Kaal Vision 2047: Extends the roadmap to 2047 with targets for port capacity, transshipment share and green shipping.
    3. PM Gati Shakti National Master Plan: Integrates port, rail, road and waterway projects on a common geographic platform to remove last mile connectivity gaps.
    4. Harit Sagar Green Port Guidelines: Set targets for reducing carbon intensity at ports, including shore power and alternative fuel bunkering.
    5. Maritime Development Fund: Announced to provide long term low cost finance for shipbuilding, ship acquisition and port infrastructure.
    6. Shipbuilding Financial Assistance Policy: Provides assistance to Indian shipyards to compete with subsidised foreign shipbuilders.
    7. Cabotage relaxation: Allows foreign flagged vessels to carry transshipment containers between Indian ports, a measure intended to make Indian hub ports viable.
    8. Jalvahak Scheme and National Waterways development: Encourages cargo movement on inland waterways to reduce road congestion to and from ports.

    Key Facts about Vizhinjam and India’s Ports

    1. First of its kind: Vizhinjam is India’s first dedicated deepwater container transshipment port and its first semi automated container terminal.
    2. Location: Thiruvananthapuram district, Kerala, on the Arabian Sea coast near the southern tip of the Indian peninsula.
    3. Natural draft: About 20 metres close to shore, among the deepest at any Indian port.
    4. Distance from the shipping lane: About 10 nautical miles from the international east and west shipping route.
    5. Concession model: Landlord model public private partnership with the Government of Kerala, signed in 2015 for 40 years.
    6. Major ports: India’s twelve major ports include Deendayal (Kandla), Mumbai, Jawaharlal Nehru, Mormugao, New Mangalore, Cochin, Chennai, Kamarajar (Ennore), V.O. Chidambaranar (Tuticorin), Visakhapatnam, Paradip and Syama Prasad Mookerjee (Kolkata).
    7. Busiest container port: Jawaharlal Nehru Port in Maharashtra handles the largest container volume among Indian ports.
    8. Newest major port: Vadhavan in Maharashtra was approved as a deepwater major port to add mainline capacity on the west coast.

    Challenges in India’s Port and Maritime Sector

    1. Transshipment leakage: A large share of India’s container transshipment is still handled at foreign hubs. e.g. Colombo has historically handled the biggest single share of India’s transshipped boxes.
    2. Hinterland connectivity gaps: Rail and road links to ports lag behind quay side capacity. e.g. dedicated freight corridor connectivity reached some ports years after their capacity expansion was complete.
    3. Low draft at legacy ports: Older river and estuary ports cannot take the largest vessels without continuous dredging. e.g. Kolkata port requires sustained maintenance dredging on the Hooghly to keep its channel usable.
    4. Turnaround time and dwell time: Container dwell time at Indian ports remains higher than at competing hubs. e.g. Indian container dwell time has been benchmarked unfavourably against Singapore and Colombo in trade facilitation assessments.
    5. Small national fleet: Indian flagged tonnage carries only a small share of the country’s own trade, so freight payments go abroad. e.g. Indian ships carry a small fraction of India’s export and import cargo, with the rest on foreign flagged vessels.
    6. Weak shipbuilding base: India holds a marginal share of global shipbuilding orders. e.g. global shipbuilding is dominated by China, South Korea and Japan, which together hold the overwhelming majority of the order book.
    7. Coastal environment and livelihood conflict: Port expansion collides with fishing livelihoods and coastal ecology. e.g. the Vizhinjam project saw prolonged protests over erosion and loss of fishing grounds.
    8. Climate and disaster exposure: Ports are exposed to cyclones, storm surge and sea level rise. e.g. Cyclone Fani and Cyclone Amphan forced extended shutdowns at east coast ports.

    Way Forward

    1. Complete port connectivity projects on schedule: Finish the dedicated rail spur and highway links so hinterland cargo can reach the quay without road congestion.
    2. Consolidate transshipment volume: Use cabotage relaxation, competitive tariffs and customs facilitation to make an Indian hub call cheaper than a Colombo call.
    3. Invest in feeder shipping capacity: Build an Indian flagged feeder fleet so the distribution leg of transshipment is also domestically earned.
    4. Institutionalise coastal community compensation: Provide time bound rehabilitation, alternative livelihood and shoreline protection commitments as part of every port concession.
    5. Monitor shoreline change scientifically: Mandate independent long term shoreline and sediment monitoring around breakwaters, with published results.
    6. Diversify operators: Encourage more than one terminal operator across the national container network to keep tariffs competitive.
    7. Green the port: Deploy shore power, alternative fuel bunkering and electrified handling equipment in line with the green port guidelines.
    8. Digitise clearance: Extend single window clearance and port community systems to cut dwell time to the levels prevailing at competing hubs.

    Matching Previous Year Question

    “[2026] In what way(s) does the Vizhinjam International Seaport represent a structural shift in India’s maritime trade and logistics policy?
    1. By functioning exclusively as a domestic cargo hub to reduce reliance on coastal shipping and eliminate the need for foreign collaborations.
    2. By focusing primarily on passenger cruise tourism and heritage shipping to increase Kerala’s profile as a maritime heritage destination.
    3. By leveraging its natural deep draft and strategic location to reduce dependence on foreign trans-shipment ports, enhance revenue retention, and reposition India in regional maritime trade.
    Select the answer using the code given below:
    (a) 1 only
    (b) 1 and 2
    (c) 2 and 3
    (d) 3 only
    Answer: (d)”

  • Odisha start-up flight-tests an autonomous in-space pharmaceutical manufacturing payload

    Why in the News

    A Bhubaneswar-based start-up, Serendipity Space, has flight-tested a prototype satellite carrying Alchemy, an autonomous pharmaceutical manufacturing payload, using a high-altitude balloon at the TIFR facility in Hyderabad. The technology aims to manufacture pharmaceutical products in microgravity without human supervision.

    How does it work?

    1. Microgravity: Near-weightlessness reduces sedimentation, buoyancy and convection.
    2. Crystal growth: Crystals can form differently and potentially with greater uniformity than on Earth.
    3. Autonomous processing: The satellite carries reagents and hardware and executes the manufacturing sequence independently.
    4. Recovery: Processed material is returned to Earth using a re-entry system and heatshield.

    What is LEO?

    • Low Earth Orbit (LEO) extends roughly up to 2,000 km above Earth.
    • The proposed system is intended for an altitude of about 400 to 500 km.

    What did the balloon test demonstrate?

    • Tested the satellite prototype under near-space conditions.
    • Validated avionics, heatshield and Alchemy payload.
    • Demonstrated autonomous operation.
    • Tested controlled return to Earth.
    • Serves as a relatively low-cost step before orbital deployment.

    How is it different from earlier space-based drug research?

    • Earlier experiments on platforms such as the ISS generally required crew involvement. The distinguishing feature here is a dedicated free-flying satellite designed for autonomous pharmaceutical manufacturing.
    • International examples include Varda Space Industries, Redwire and experiments aboard China’s Tiangong station.

    Why is it important for India?

    • Promotes private-sector space innovation.
    • Expands India’s space ecosystem beyond Bengaluru to cities such as Bhubaneswar, Pune and Ahmedabad.
    • Creates opportunities in pharma, biotechnology, space engineering and advanced manufacturing.
    • Demonstrates potential convergence of space technology + biotechnology + pharmaceuticals.

    Laws, Treaties and Rules Governing Space Activities

    1. Outer Space Treaty, 1967: Bars national appropriation of outer space and makes States internationally responsible for national activities, including those of private entities.
    2. Liability Convention, 1972: Makes the launching State absolutely liable for damage caused on the surface of the Earth or to aircraft in flight.
    3. Registration Convention, 1975: Requires launching States to maintain a registry of objects launched into outer space and to furnish details to the United Nations.
    4. Rescue Agreement, 1968: Obliges States to assist astronauts in distress and to return space objects to the launching State.
    5. Indian Space Policy, 2023: Defines the roles of ISRO, IN-SPACe and NSIL and permits private entities across the full value chain from launch to satellite operations.
    6. Space Activities Bill, 2017: Proposed a licensing and liability framework for private Indian space activity but lapsed without enactment.
    7. Norms, Guidelines and Procedures issued by IN-SPACe: Prescribe the authorisation route, safety requirements and liability sharing for non governmental entities operating from India.
    8. Telecommunications Act, 2023 and allied spectrum rules: Govern satellite spectrum assignment and the licensing of satellite based communication services.

    Indian National Space Promotion and Authorisation Centre

    1. What it is: IN-SPACe is the single window autonomous agency that authorises, promotes and supervises space activities by non governmental entities in India.
    2. Year established: Announced in 2020 as part of the space sector reforms and made operational in 2022.
    3. Parent department: It functions as an autonomous body under the Department of Space.
    4. Headquarters: Ahmedabad, Gujarat.
    5. Jurisdiction: It authorises private launches, satellite establishment and operation, ground station creation and the dissemination of space based data.
    6. Enabling role: It permits private entities to use ISRO facilities and to access ISRO technologies through transfer agreements.
    7. Distinction from NSIL: IN-SPACe regulates and promotes, while NewSpace India Limited is the commercial arm that contracts launches and technology transfers.

    “[2026] Consider the following statements about involvement of private entities in India’s space programme:
    1. IN-SPACe is an autonomous agency formed to facilitate participation of private entities.
    2. Agnikul Cosmos launched the world’s first flight using 3D-printed rocket engine.
    3. Skyroot Aerospace has developed liquid fuel for GSLV.
    (a) 1 only
    (b) 2 and 3 only
    (c) 1 and 2 only
    (d) 1, 2 and 3

  • India’s first privately-built FFSC rocket engine signals a new dawn in space flight

    Why in the News

    Bengaluru-based Astrobase Space Technologies unveiled EVEREST, India’s first privately built 800 kN Full-Flow Staged Combustion (FFSC) LOX-Methane engine on 7 August 2026. India is now the fourth country after Russia, the US and China with FFSC technology.

    What is an FFSC Engine?

    1. About: An advanced liquid rocket engine architecture offering high thrust and efficiency.
    2. Full-flow: Fuel and oxidiser pass through separate pre-burners, driving turbopumps before entering the main chamber.
    3. Advantage: Almost all propellant contributes to thrust, improving efficiency and reusability.

    What is LOX-Methane?

    • LOX: Liquid Oxygen as oxidiser.
    • Methane: Fuel that burns relatively cleanly, reducing engine deposits and aiding faster refurbishment and turnaround.

    What is IN-SPACe?

    • Indian National Space Promotion and Authorisation Centre, an autonomous agency under the Department of Space.
    • Acts as a single-window agency to promote and authorise private space activities.
    • Astrobase received support through its Technology Adoption Fund.

    Why is EVEREST Significant?

    1. Technology: Makes India the 4th FFSC-capable nation.
    2. Reusability: Suitable for reusable launch vehicles with precise throttle control.
    3. Capacity: Could enable reusable systems carrying up to 30 tonnes to LEO.
    4. Manufacturing: Uses advanced manufacturing, including large-scale 3D printing.
    5. Timeline: Development began in 2024; integrated hot-fire tests are planned at Anantapur, with first flight targeted for December 2028.

    Global Comparison

    • Russia: Pioneer in FFSC technology.
    • USA: SpaceX’s Raptor is the only operational FFSC engine.
    • China: LandSpace has developed a commercial high-thrust FFSC engine.
    • India: EVEREST marks its entry into FFSC technology.

    Private Space Sector in India

    • 2020 reforms: Opened space activities to private players through IN-SPACe.
    • Indian Space Policy 2023: Enables greater private participation across the space value chain.
    • NSIL: Commercial arm of the Department of Space.
    • Firms such as Skyroot Aerospace and Agnikul Cosmos are developing indigenous launch technologies.

    “[2026] Consider the following statements about involvement of private entities in India’s space programme:

    1. IN-SPACe is an autonomous agency formed to facilitate participation of private entities.

    2. Agnikul Cosmos launched the world’s first flight using 3D-printed rocket engine.

    3. Skyroot Aerospace has developed liquid fuel for GSLV.

    (a) 1 only

    (b) 2 and 3 only

    (c) 1 and 2 only

    (d) 1, 2 and 3

  • Asiatic lion population rises from 523 (2015) to 891 (2025) under Project Lion

    Why in the News

    India’s Asiatic lion population increased from 523 in 2015 to 891 in 2025, the highest recorded count. Project Lion, launched in 2020, aims to strengthen conservation of the species and its Gir landscape.

    What is Project Lion?

    • Launched: 2020 for long-term conservation of the Asiatic lion.
    • Focus: Habitat improvement, disease surveillance, scientific monitoring and community participation.
    • Tools: Radio-collaring, camera traps and genetic/gene-pool conservation.
    • Need: The entire wild population is concentrated in one landscape, creating a major single-population risk.

    Latest Population Status

    • 2015: 523 lions
    • 2025: 891 lions
    • Key concern: Many lions now occur outside protected areas, increasing human-wildlife conflict.
    • Habitat: Gir is approaching its carrying capacity, strengthening the case for a second home.

    Back2Basics: Asiatic Lion

    • Scientific name: Panthera leo persica
    • IUCN: Endangered
    • CITES: Appendix I
    • Wild Life (Protection) Act, 1972: Schedule I
    • Only wild population: India
    • Natural range: Gir landscape, Gujarat
    • Proposed second home: Barda Wildlife Sanctuary, Porbandar.

    Why is a Second Home Needed?

    1. Single-site risk: Disease or disaster in Gir could threaten the entire species.
    2. Habitat saturation: Increasing population is pushing lions beyond protected areas.
    3. Human-wildlife conflict: Greater interaction with people and livestock.
    4. Disease risk: Outbreaks such as Canine Distemper Virus (CDV) can threaten large carnivores.
    5. Habitat fragmentation: Mining, roads and railways can disrupt dispersal corridors.

    Statutory Framework

    • WLPA, 1972: Wild Life (Protection) Act, 1972, provides legal protection to wildlife.
    • FCA, 1980: Forest (Conservation) Act, 1980, regulates forest diversion.
    • BDA, 2002: Biological Diversity Act, 2002, promotes conservation and sustainable use.
    • EPA, 1986: Environment (Protection) Act, 1986, provides the broader environmental framework.

    Government Initiatives

    • Project Lion (2020): Asiatic lion conservation.
    • Project Tiger (1973): Tiger conservation.
    • Project Elephant (1992): Elephant and corridor conservation.
    • Project Snow Leopard (2009): Snow leopard and Himalayan ecosystem conservation.
    • Integrated Development of Wildlife Habitats: Supports protected areas and endangered species recovery.

    [2019] Consider the following statements:

    1. Asiatic lion is naturally found in India only.

    2. Double-humped camel is naturally found in India only.

    3. One-horned rhinoceros is naturally found in India only.

    Which of the statements given above is / are correct?

    (a) 1 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • India’s first open-access ecoacoustic biodiversity dataset

    Why in the News

    Researchers have released India’s first open-access, crowdsourced ecoacoustic biodiversity dataset, capturing 518 species across 5,815 minutes of recordings from 25 states and union territories.

    What is ecoacoustics?

    1. Ecoacoustics is the study of sounds produced by organisms and the surrounding environment to understand ecosystems, biodiversity and ecological change.
    2. Instead of relying only on visual surveys, passive acoustic recorders can continuously capture:
      • Bird calls, Insect sounds, Frog and bat calls, Reptile and mammal vocalisations, Marine animal sounds, Background environmental sounds such as rain, wind and human activity

    Why does it matter?

    1. Non-invasive monitoring: Sound-based surveys track biodiversity cheaply and continuously across large areas.
    2. Open science: An open-access, crowdsourced dataset lets any researcher reuse the data for conservation.
    3. Baseline data: It creates a reference against which future biodiversity loss can be measured.

    [2023] Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?

    [A] Butterflies

    [B] )Dragonflies

    [C] Honeybees

    [D] Wasps

  • India crosses 300 GW of non-fossil power capacity

    Why in the News

    India’s non-fossil fuel capacity has crossed 300 GW, achieving about 60% of the 500 GW target for 2030. The key challenge is converting installed capacity into actual electricity generation.

    What is the 500 GW Target?

    1. Panchamrit pledge: India committed at COP26, Glasgow (2021) to achieve 500 GW of non-fossil electricity capacity by 2030.
    2. Coverage: Includes solar, wind, hydro and nuclear capacity.
    3. Not total capacity: It excludes fossil-fuel capacity such as coal and gas.

    Why Capacity ≠ Generation?

    1. Capacity factors: Solar and wind are intermittent, so installed capacity does not translate proportionately into electricity generated.
    2. Storage gap: Batteries and pumped-storage hydropower are needed to provide reliable renewable power.
    3. Grid constraints: Transmission and grid-balancing infrastructure must expand alongside renewable capacity.
    4. Peak demand mismatch: Renewable generation may not coincide with periods of highest electricity demand.

    Value Addition

    • Panchamrit: 500 GW non-fossil capacity by 2030; 50% energy requirements from renewables; reduce projected carbon emissions by 1 billion tonnes; reduce emissions intensity by 45%; achieve net zero by 2070.
    • Key challenge: Shift from capacity addition → reliable, dispatchable clean power.

    “[2022, GS3, 15 marks] Do you think India will meet 50 percent of its energy needs from renewable energy by 2030? Justify your answer. How will the shift of subsidies from fossil fuels to renewables help achieve the above objective? Explain.”

    [2026] Consider the following statements with reference to India’s response to climate change:
    I. India’s Long-Term Low Emission Development Strategy (LT-LEDS) is a crucial tool for achieving net-zero emissions by 2070
    II. India’s 4th Biennial Update Report (BUR-4) submitted in December, 2024 recorded around 8% decrease in Greenhouse gas emissions in 2020 over 2019.
    III. Climate-resilient development necessarily depends on quick and short-term achievement of emission reduction targets.
    Which of the following relationships among the above statements is/are correct?
    1. Statement I is empirically supported by statement II.
    2. Statement III contradicts the approach implicit in statement I.
    3. Statement I and statement III together establish the premise of long-term sustainability.
    Select the answer using the code given below:

    [A] 1 only

    [B] 1 and 2

    [C] 2 and 3

    [D] 3 only

  • How ‘ghost particles’ can point the way to spent nuclear fuel

    Why in the News

    Scientists have achieved the first high precision measurement of the neutrino signature from spent nuclear fuel, enabling remote monitoring of nuclear material and strengthening global nuclear non proliferation efforts.

    What is a neutrino?

    • Ghost particle: A neutrino is a nearly massless, electrically neutral subatomic particle that interacts only through the weak nuclear force and gravity.
    • Produced in nuclear reactions: They are emitted in large numbers during nuclear fission, radioactive decay, and reactions inside stars.
    • Highly penetrating: Since neutrinos rarely interact with matter, they can pass through the Earth almost unaffected, making them extremely difficult to detect.

    What did the study achieve?

    • First precise measurement: Researchers in France made the first high precision measurement of the neutrino emissions from spent nuclear fuel.
    • Remote monitoring: The neutrino signal can be measured without physically opening or handling the spent fuel.
    • Scientific validation: The findings were published in a leading peer reviewed physics journal.

    Why is this important for nuclear non proliferation?

    • Supports IAEA safeguards: Enables the International Atomic Energy Agency (IAEA) to verify spent nuclear fuel remotely.
    • Detects diversion: Changes in the neutrino signal can indicate diversion of plutonium or other fissile material for weapons.
    • Strengthens nuclear safeguards: Provides a non intrusive and tamper resistant method to improve verification of nuclear material.
    • Enhances transparency: Builds confidence in peaceful civilian nuclear programmes.

    Prelims Pointers

    • The International Atomic Energy Agency (IAEA) is the UN agency responsible for promoting peaceful uses of nuclear energy and implementing nuclear safeguards.
    • Neutrinos are electrically neutral, nearly massless particles that interact via the weak nuclear force.
    • Nuclear reactors and spent nuclear fuel continuously emit neutrinos.
    • Spent nuclear fuel contains plutonium that can potentially be separated for nuclear weapons, making its monitoring important.

    “[2020] In India, why are some nuclear reactors kept ‘IAEA Safeguards’ while others are not?
    (a) Some use uranium and others use thorium
    (b) Some use imported uranium and others use domestic supplies
    (c) Some are operated by foreign enterprises and others are operated by domestic
    (d) Some are State-owned and others are privately-owned

  • Nearly 94,000 government schools shut in a decade

    Why in the News?

    A NITI Aayog report shows that about 94,000 government schools closed over the past decade. While the government calls it school rationalisation, concerns have been raised over its impact on access to education and the Right to Education (RTE).

    Key Findings

    • Government school enrolment declined from 71% (2005) to 49.24% (2024-25).
    • The sharpest decline was seen in Uttar Pradesh, Madhya Pradesh, and Jammu & Kashmir.

    Government’s Stand vs Concerns

    Government’s Rationale

    • Merging low enrolment schools to improve teacher and resource utilisation.
    • Supported by the NEP 2020 concept of school complexes/clusters.

    Key Concerns

    • Increased travel distance, especially in rural and remote areas.
    • Greater impact on SC, ST, girl students and poor households.
    • May push disadvantaged families towards unaffordable private schools.

    Link with the Right to Education (RTE)

    • The Right of Children to Free and Compulsory Education (RTE) Act, 2009 guarantees a neighbourhood school for children aged 6 to 14 years.
    • School closures should not compromise this legal entitlement or equitable access.
    • Unified District Information System for Education Plus (UDISE+) is India’s official school education database.

    [2018] Consider the following statements:

    1. As per the Right to Education (RTE) Act, to be eligible for appointment as a teacher in a State, a person would be required to possess the minimum qualification laid down by the concerned State Council of Teacher Education.

    2. As per the RTE Act, for teaching primary classes, a candidate is required to pass a Teacher Eligibility Test conducted in accordance with the National Council of Teacher Education guidelines.

    3. In India, more than 90% of teacher education institutions are directly under the State Governments.

    Which of the statements given above is/are correct?

    (a) 1 and 2

    (b) 2 only

    (c) 1 and 3

    (d) 1, 2 and 3

  • Census 2027 self-enumeration begins in Assam

    Why in the News?

    India has launched its first Digital Census with self enumeration starting in Assam. The online phase continues till 16 August, followed by House Listing from 17 August.

    What is the Census?

    The Census is the official collection of demographic, social and economic data of the population.

    Key Facts

    • Legal Basis: Census Act, 1948
    • Authority: Office of the Registrar General and Census Commissioner, Ministry of Home Affairs
    • Frequency: Every 10 years (Decennial)
    • Nature: Mandatory; information is kept confidential
    • Constitutional Status: Union Subject (Entry 69, Union List)

    What is Self Enumeration?

    Households can submit Census details online instead of depending solely on enumerators.

    Two Phases

    • House Listing: Housing and household details
    • Population Enumeration: Individual demographic details

    Significance

    • Improves data accuracy through digital verification.
    • Enables faster processing and publication.
    • Provides updated data for Delimitation, Welfare targeting, Reservation, Fiscal devolution, and Development planning
    • Replaces reliance on 2011 Census data after the delay of the 2021 Census.

    Prelims Facts

    • First Census: 1872 (non synchronous)
      • A non-synchronous census is a population count that is carried out at different times in different regions rather than all at once on a single date
    • First synchronous Census: 1881
      • A synchronous census is an official population count conducted simultaneously across an entire country within a specific, unified timeframe rather than at different times in different regions.
    • Conducted by Registrar General and Census Commissioner of India
    • Census falls under the Union List.

    [2009] Consider the following statements:

    1. Between Census 1951 and Census 2001, the density of the population of India has increased more than three times.

    2. Between Census 1951 and Census 2001, the annual growth rate (exponential) of the population of India has doubled.

    Which of the statements given above is/are correct?

    (a) 1 only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2