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GS Paper: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

  • SpaceX’s Starship completes critical test flight

    Why in the News?

    SpaceX’s Starship has completed its first fully successful test flight after a series of failures.

    SpaceX’s Starship completes critical test flight

    About SpaceX Starship:

    • Design: A two-stage heavy-lift launch vehicle built to carry crew and cargo to Earth orbit, the Moon, Mars, and beyond.
    • Developer: SpaceX, founded by Elon Musk, with the vision of enabling interplanetary travel and colonisation.
    • Size: Nearly 120 metres tall with booster, making it the largest rocket ever built and flown. Taller than Saturn V (111 m) and India’s Qutub Minar (72.5 m).
    • Historic Test Flight: On 27 August 2025, achieved its first fully successful flight. Booster splashed down in the Gulf of Mexico, spacecraft reached the Indian Ocean.
    • Role in NASA Missions: Critical to Artemis Program for returning humans to the Moon and later missions to Mars.
    • Long-term Goal: Make Starship fully and rapidly reusable, cutting costs and redefining space travel.

    Key Features of Starship:

    • Two-Stage Rocket System:
      • Super Heavy booster powered by 33 Raptor engines generating 74 meganewtons of thrust, nearly double NASA’s SLS and twice Saturn V.
      • Engines burn liquid oxygen and methane, enabling deep-space use and Mars resource utilisation.
      • Booster fully reusable, capable of atmospheric re-entry and recovery.
      • Six Raptor engines and four landing fins, designed for full reusability on long-duration missions.
    • Payload Capacity: Can carry up to 150 tonnes to Low-Earth Orbit and over 100 tonnes to the Moon and Mars, more than all soft-landed lunar payloads combined.
    • Cost Reduction Potential: Estimated to deliver 100 tonnes of cargo to Mars for ~$50 million, compared to NASA Shuttle’s $1.5 billion per launch with far less payload.
    [UPSC 2025] Consider the following space missions:

    I. Axiom-4 II. SpaDeX III. Gaganyaan

    How many of the space missions given above encourage and support microgravity research?

    Options: (a) Only one (b) Only two (c) All the three* (d) None

     

  • [pib] India hosts 3GPP RAN Working Group Meetings on 6G Standardization

    Why in the News?

    The Telecommunications Standards Development Society (TSDI) of India has hosted the 3GPP Radio Access Networks (RAN1–RAN5) Working Group Meetings focusing on 6G standardization for the first time, in Bengaluru.

    About 3GPP (3rd Generation Partnership Project):

    • Overview: Global body established in 1998 for mobile telecom standards (2G → 6G).
    • Partners: Collaboration of ARIB (Japan), ATIS (USA), CCSA (China), ETSI (Europe), TSDSI (India), TTA (South Korea), and TTC (Japan).
    • Output: Publishes technical specifications, forming the global benchmark for telecom operators, equipment makers, and regulators.
    • Focus Areas:
      1. RAN (Radio Access Network) – towers & radios connecting users to the network.
      2. Core Network – switching, routing, internet connectivity.
      3. Services & System Aspects – apps, charging, security.

    What is RAN (Radio Access Network)?

    • Definition: The wireless part of a mobile network that links user devices (phones, IoT) to the core network using radio waves.
    • Components:
      • Base Stations (Node B in 3G, eNodeB in 4G, gNodeB in 5G).
      • Antennas & radios.
      • Controllers (e.g., RNC in 3G).
    • Functions:
      • Transmits & receives radio signals.
      • Allocates spectrum.
      • Manages coverage, speed, call/data quality, and handovers.
    • Importance: Defines network performance (speed, latency, capacity).
    • 3GPP RAN Working Groups (RAN1–RAN5): Develop physical layer, radio protocols, performance testing, ensuring smooth migration from 4G → 5G → 6G.

    Back2Basics:  Evolution of Mobile Standards

    • 3G (UMTS – Universal Mobile Telecommunications System): Introduced in early 2000s; based on WCDMA; enabled video calls, MMS, and mobile internet (up to 2 Mbps).
    • 4G (LTE – Long-Term Evolution): All-IP, OFDMA-based; provided high-speed broadband (hundreds of Mbps), VoLTE, and seamless video streaming.
    • 5G (NR – New Radio): Flexible OFDM-based; delivers ultra-high speeds (Gbps), ultra-low latency, supports IoT, automation, AR/VR, and network slicing.
    • 6G (Sixth Generation – under research): Expected by ~2030; aims for terabit-class speeds, AI-native networking, holographic communication, and satellite–terrestrial integration.

     

    [UPSC 2019] With reference to communication technologies, what is/are the difference / differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?

    1. LTE ‘is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.

    2. LTE is data-only technology and VoLTE is voice-only technology.

    Select the correct answer using the code given below.

    Options: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2*

     

  • Discovery of Rare Quadruple Star System with Brown Dwarfs

    Why in the News?

    Scientists have identified UPM J1040−3551 AabBab, a rare quadruple star system with two brown dwarfs orbiting two red dwarfs.

    Discovery of Rare Quadruple Star System with Brown Dwarfs

    About UPM J1040−3551 AabBab:

    • Overview: Newly discovered quadruple star system in the Milky Way.
    • Composition: Two cold T-type brown dwarfs orbiting a pair of young red dwarf stars.
    • Uniqueness: First known system of its kind; extremely rare as brown dwarfs usually exist alone, with less than 5% chance of companions.
    • Significance: Offers new insights into the formation and evolution of low-mass stars and sub-stellar objects.

    What are Brown Dwarfs?

    • Overview: Celestial objects between stars and planets in characteristics.
    • Formation: Form like stars from collapsing gas and dust but lack sufficient mass for sustained hydrogen fusion.
    • Nickname: Often called “failed stars” due to absence of sustained nuclear fusion.
    • Mass Range: Can reach up to about 70 times the mass of Jupiter.
    • Atmosphere: Similar to gas giants like Jupiter and Saturn, with molecules and water vapor clouds.
    • Detection: Very faint and cold; usually identified in multiple-star systems where brighter stars help estimate their properties.
    • Astronomical Importance: Help define the boundary between stars and planets; provide clues to conditions necessary for stellar and planetary formation.
    • Cosmological Role: Studying their abundance and distribution aids in understanding mass distribution in the universe and connections to dark matter.
    [UPSC 2024] Consider the following statements:

    Statement-I: Giant stars live much longer than dwarf stars.

    Statement-II: Compared to dwarf stars, giant stars have a greater rate of nuclear reactions.

    Which one of the following is correct in respect of the above statements?

    Options: (a) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I

    (b) Both Statement-I and Statement-II are correct, but Statement-II does not explain Statement-I

    (c) Statement-I is correct, but Statement-II is incorrect

    (d) Statement-I is incorrect, but Statement-II is correct*

     

  • First Human Case of New World Screwworm in US

    Why in the News?

    The US authorities have reported the first human case of the flesh-eating parasite, the New World screwworm.

    About New World Screwworm (Cochliomyia hominivorax):

    • Overview: Called “man-eaterlarvae in Latin; South America and the Caribbean.
    • Larval Stage: Eggs hatch into maggots that burrow into wounds of warm-blooded animals (including humans) and feed on living flesh in a screw-like motion.
    • Life Cycle: After feeding, larvae fall to soil, pupate, and emerge as adult Blue-grey blowfly.
    • Human Infestation (Myiasis): Causes painful non-healing wounds, bleeding, foul odour, sensation of movement; may lead to sepsis or death if untreated.
    • Eradication in USA: Eliminated in 1966 using Sterile Insect Technique (SIT) by mass release of sterile males.

    Current Spread and Concerns:

    • Recent Outbreaks: Detected in Panama, Costa Rica, Nicaragua, and Honduras.
    • Cause of Spread: Likely linked to movement of infested cattle across regions.
    • Possible Weakness in SIT: Current strain of sterilized flies may be less effective than earlier strains.
    • New Human Case: First travel-associated screwworm myiasis reported in the United States in 2025.
    • Livestock Threat: Serious danger to cattle industry; risk of animal suffering and economic loss.
    • Biosecurity Risk: Reemergence could undo decades of eradication efforts if uncontrolled.
    [UPSC 2017] Consider the following statements:

    1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue.

    2. Sexual transmission of Zika virus disease is possible.

    Which of the statements given above is/are correct?

    Options: (a) 1 only (b) 2 only (c) Both 1 and 2* (d) Neither 1 nor 2

     

  • Asgard Archaea and the Evolution of Complex Cells

    Why in the News?

    Recent research by IISc on Asgard archaea — the closest living relatives of eukaryotes — has shed new light on how simple prokaryotic cells evolved into complex eukaryotic cells with nuclei, cytoskeletons, and organelles.

    About Asgard Archaea:

    • Nature: Tiny microbes living in deep-sea mud and extreme environments.
    • Evolutionary Link: Closest relatives of eukaryotic cells (plants, animals, humans).
    • Importance: Help explain how simple prokaryotic cells (bacteria/archaea) evolved into complex eukaryotic cells.
    • Significance: Considered the “missing link” in the origin of complex life.

    Findings from Indian Institute of Science (IISc) Study:

    • Focus: Scientists studied a subgroup called Odinarchaeota.
    • Discovery: Found two FtsZ genes (most microbes have one) and a tubulin-like gene.
      • FtsZ1: Works like bacterial proteins → forms straight filaments and attaches to cell membranes.
      • FtsZ2: Builds spiral structures but needs helper proteins to stick to membranes.
    • Division of Labour: Cooperation of FtsZ1 and FtsZ2 shows early signs of cellular specialisation.
    • Clue for Evolution: Suggests Asgard microbes were already experimenting with primitive “cytoskeleton” systems, paving way for complex cells.
    [UPSC 2012] Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

    Options:

    (a) Hydrogen, Oxygen, Sodium

    (b) Carbon, Hydrogen, Nitrogen*

    (c) Oxygen, Calcium, Phosphorus

    (d) Carbon, Hydrogen, Potassium

     

  • [pib] Prototype Fast Breeder Reactor (PFBR)

    Why in the News?

    The Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI) 500 MWe Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, is scheduled to achieve criticality in March 2026 and reach full power generation by December 2026.

    What is a Fast Breeder Reactor (FBR)?

    • A Fast Breeder Reactor (FBR) is a type of nuclear reactor that generates more fuel than it consumes, essentially “breeding” more nuclear material to power itself and future reactors.
    • It does this by using high-energy, or “fast,” neutrons to convert abundant, non-fissile uranium (U-238) into fissile plutonium (Pu-239) for fuel.

    About India’s Prototype Fast Breeder Reactor (PFBR):

    • Design began: 1980s as prototype for future 600 MWe FBRs.
    • Timeline: Construction began in 2004, faced delays; cost escalated from ₹3,500 crore to ₹7,700 crore.
    • Capacity: 500 MWe, sodium-cooled fast breeder reactor.
    • Predecessors: It builds on India’s earlier reactors: KAMINI and Fast Breeder Test Reactor (FBTR).
    • Technology: Completely indigenous, designed by Indira Gandhi Centre for Atomic Research (IGCAR).
    • Fuel: Uranium-Plutonium mixed oxide (MOX); later stages to use Thorium-232 to breed fissile U-233.
    • Burnup: 100 GWd/t, reactor life ~40 years.
    • Coolant: 1,750 tonnes of liquid sodium; pool-type design with high thermal inertia.
    • Construction agencies: Uranium-Plutonium mixed oxide (MOX) fuel fabricated by BARC Tarapur; reactor equipment by BHEL.
    • Site: Kokkilamedu, near Kalpakkam (next to Madras Atomic Power Station).

    Significance in India’s Nuclear Programme:

    • PFBR is the second stage of India’s three-stage programme:
      • Stage 1: Pressurised Heavy Water Reactors (PHWRs) using natural uranium.
      • Stage 2: Fast Breeder Reactors producing plutonium and U-233 from thorium.
      • Stage 3: Thorium-based U-233 fuel cycle.
    • Enables closed fuel cycle: recovery and recycling of fissile and fertile material from spent nuclear fuel (SNF).
    • Enhances energy security by optimally utilising limited uranium and vast thorium reserves.
    • Reduces radioactive waste through recycling.
    [UPSC 2024] With reference to radioisotope thermoelectric generators (RTGs), consider the following statements:

    1. RTGs are miniature fission reactors.

    2. RTGs are used for powering the onboard systems of spacecrafts.

    3. RTGs can use Plutonium-238, which is a by-product of weapons development.

    Which of the statements given above are correct?

    Options: (a) 1 and 2 only (b) 2 and 3 only* (c) 1 and 3 only (d) 1, 2 and 3

     

  • Why India needs a national space law

    India is entering a new era of space exploration with  lunar success, Gaganyaan, and the proposed Bharat Antariksh Station. Yet, one critical element is missing, a national space law. While India has ratified global treaties like the Outer Space Treaty (1967), it lacks a domestic legal framework to regulate private participation, ensure liability, and attract investment. As space activities expand beyond government agencies to startups and private players, the absence of clear laws poses risks to accountability, innovation, and global competitiveness.

    The Urgency of a National Space Law

    1. Major milestone vs. missing law: India’s scientific achievements are unmatched, but the legal architecture remains absent, risking accountability gaps.
    2. Private participation: With startups entering, lack of clarity on licensing, FDI rules, liability, and insurance creates operational hurdles.
    3. International responsibility: Under the Outer Space Treaty, India is responsible for both governmental and private activities, yet it lacks the domestic framework to enforce compliance.
    4. Global contrast: Countries like the U.S., Japan, and Luxembourg already have national legislation that provides legal certainty and attracts investment.

    Principles of the Outer Space Treaty

    1. Foundational principles: Space is the province of all mankind, prohibiting national appropriation and militarisation.
    2. State responsibility: Nations are responsible for activities in space, whether by state or private entities.
    3. Liability framework: Countries bear liability for damages caused by their space objects.
    4. Not self-executing: According to UNOOSA, national laws are essential to translate treaty principles into enforceable domestic regulations.

    India’s Incremental Approach to Space Legislation

    1. Methodical strategy: India is incremental and cautious, ensuring technical regulations precede overarching law.
    2. Catalogue of Indian Standards: A framework to ensure safety of space operations.
    3. Indian Space Policy (ISP), 2023: Encourages non-governmental participation in space activities.
    4. IN-SPACe Norms, Guidelines and Procedures (NPG): Provide procedures for authorisation of space activities.
    5. Pending gap: The broader Space Activities Law that incorporates treaty obligations is still not enacted.

    Industry Concerns and Operational Challenges

    1. Statutory authority gap: IN-SPACe lacks formal legal backing, leaving decisions open to procedural challenges.
    2. Licensing and delays: Companies face multiple ministry clearances, creating uncertainty.
    3. FDI rules: Industry demands clarity, such as 100% automatic FDI in satellite components to attract capital.
    4. Liability and insurance: While India is internationally liable, companies need affordable third-party insurance to cover risks.
    5. Intellectual property protection: Current frameworks risk talent and tech migration to IP-friendly nations.
    6. Space debris management: Absence of mandatory accident investigations and debris laws increases operational risks.

    The Importance of Affordable Insurance for Space Startups

    1. High-value assets: Satellites and payloads involve massive investments; startups cannot absorb losses alone.
    2. Global liability: India bears responsibility internationally, so private players must secure third-party insurance.
    3. Investor confidence: Insurance frameworks encourage investors, reducing risk aversion.
    4. Innovation support: Affordable insurance ensures startups can experiment and grow, without fear of crippling liability.

    Conclusion

    India’s space programme has made historic strides, but without a comprehensive national space law, its progress risks being undermined by regulatory gaps. A forward-looking framework ensuring clarity, liability management, insurance, IP protection, and statutory backing for IN-SPACe is essential to balance innovation with responsibility. The future of India’s space leadership will depend as much on strong laws as on strong rockets.

    Value Addition

    • UNOOSA Insight: National laws act as the domestic enabler of international obligations. Without them, treaty principles remain unenforceable.
    • Comparative Perspective:
      • United States: Commercial Space Launch Act allows private launches with liability coverage.
      • Luxembourg: Pioneered space mining rights to attract global investors.
      • Japan: Provides licensing, insurance, and debris mitigation guidelines.
    • Governance Lens: Reflects the larger theme of state capacity to regulate frontier technologies, similar to how data protection laws govern digital economies.
    • Economic Angle: A robust legal framework will strengthen India’s space economy, valued at nearly $9.6 billion (2020) and projected to grow to $13 billion by 2025.
    • Investor Confidence: Insurance frameworks, clear FDI rules, and IP protection create a trustworthy ecosystem for global investors.
    • Security Dimension: Dual-use nature of space technologies necessitates clarity in export controls and defence linkages.
    • Ethical Dimension: Covers responsibility towards space debris management and sustainability of outer space as a global commons.

    Mapping Microthemes

    • GS Paper II (Governance, International Relations):
      • Outer Space Treaty (1967) – India’s obligations and global responsibility
      • Role of UNOOSA – multilateral governance of outer space
      • Need for National Legislation – predictability, legal clarity, statutory backing for IN-SPACe
    • GS Paper III (Science & Technology, Economy, Security):
      • Growth of India’s Space Economy – Chandrayaan-3, Gaganyaan, startups, private players
      • Insurance and Liability – affordability for startups, international responsibility for damages
      • Intellectual Property Rights – preventing brain drain, encouraging innovation
      • Space Debris Management – sustainability and accident investigation procedures
      • Dual-Use Technology Challenge – balancing civilian and defence aspects
    • GS Paper IV (Ethics & Governance):
      • Accountability in Outer Space – who bears liability for damage?
      • Ethics of Space Exploration – sustainability, “province of mankind” principle
      • Equitable Access – preventing monopolisation of space resources by few nations

    PYQ Relevance

    [UPSC 2016] Discuss India’s achievements in the field of Space Science and Technology. How the application of this technology has helped India in its socio-economic development?

    Linkage: While India’s space achievements like Chandrayaan-3 and Gaganyaan highlight scientific progress, the absence of a national space law shows a governance gap. A legal framework is crucial to translate these achievements into sustainable socio-economic gains through private participation, investment, and accountability.

     

  • Bistability in Pseudomonas aeruginosa and the glpD Gene 

    Why in the News?

    German researchers found that P. aeruginosa bacteria can switch a key gene (glpD) on or off, even though the bacteria are genetically identical — a survival trick called epigenetic bistability.

    Bistability in Pseudomonas aeruginosa and the glpD Gene 

    About Pseudomonas aeruginosa:

    • Nature: Rod-shaped bacterium found in soil, water, and hospital environments.
    • Pathogen Type: Opportunistic; infects mainly those with weakened immunity.
    • Resistance: Forms biofilms (protective layers), making it highly resistant to antibiotics.
    • Genetic Flexibility: Large genome (~6,000 genes) allows adaptation to diverse environments.

    Impact on Humans:

    • Hospital Infections: Leading cause of hospital-acquired infections.
    • Vulnerable Groups: Burn patients, catheter users, cystic fibrosis patients.
    • Diseases Caused: Keratitis (eye infection), urinary tract infections, pneumonia, bloodstream infections.
    • Mortality: Strong antibiotic resistance makes treatment difficult, leading to high hospital deaths.

    Recent Research Findings:

    • Discovery: German researchers identified bistable expression of the glpD gene (active in some cells, inactive in others).
    • Survival Advantage: This variability helps bacteria survive hostile conditions and trigger infections even from small populations.
    • Experiments:
      • Cells with glpD active were more lethal in moth larvae and mouse immune models.
      • Cells without glpD showed reduced infection ability.
    • Significance: On–off switching of glpD is a survival and infection strategy; targeting this mechanism may lead to new treatments for resistant infections.
    [UPSC 2010] Which bacterial strain, developed from natural isolated by genetic manipulations, can be used for treating oil spills?

    Options: (a) Agrodbacterium (b) Clostridium (c) Nitrosomonas (d) Pseudomonas*

     

  • Primary Amoebic Meningoencephalitis (PAM)

    Why in the News?

    Kerala’s health department has issued an alert in Kozhikode district after three consecutive cases of the rare and highly fatal disease Primary Amoebic Meningoencephalitis (PAM) were reported.

    About Primary Amoebic Meningoencephalitis (PAM):

    • Cause: Rare and usually fatal infection caused by Naegleria fowleri, known as the “brain-eating amoeba.”
    • Habitat: Thrives in warm freshwater up to 46°C (115°F).
    • Entry: Enters through the nose during swimming or water activities, travels via olfactory nerve to the brain.
    • Impact: Destroys brain tissue and causes severe swelling.
    • Transmission: Not communicable from person to person.
    • Symptoms: Headache, fever, nausea, vomiting, stiff neck, confusion, seizures, hallucinations, coma, and death.
    • Progression: According to the Centers for Disease Control and Prevention (CDC), most cases result in death within 1–18 days of symptom onset.

    Diagnosis and Treatment:

    • Diagnosis:
    • Treatment:
      • No single therapy effectively established.
      • Managed per CDC guidelines using drug combinations such as: Medical interventions typically involve a combination of drugs, including amphotericin B, azithromycin, fluconazole, rifampin, miltefosine, and dexamethasone.
    [UPSC 2008] Consider the following statements:

    1. Femur is the longest bone in the human body.

    2. Cholera is a disease caused by bacteria.

    3. ‘Athlete’s foot’ is a disease caused by virus. Which of the statements given above are correct?

    Options: (a) 1 and 2 * (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

     

  • Scientists turn E. Coli Bacteria into a Bio-Sensor

    Why in the News?

    Researchers from UK and China have developed a bioelectronic device where genetically engineered E. Coli bacteria act as self-powered chemical bio-sensor.

    About Escherichia coli (E. coli) Bacteria:

    • Overview: Gram-negative, rod-shaped bacterium that inhabits the lower intestine of warm-blooded animals.
    • Family: Belongs to the Enterobacteriaceae family.
    • Harmless vs Pathogenic: Most strains are harmless, but some (e.g., E. coli O157:H7) cause severe foodborne illness, diarrhoea, and kidney complications.
    • Gut Role: Contributes to vitamin K synthesis and maintains gut microbiota balance.
    • Transmission: Pathogenic strains spread via contaminated food, water, or direct contact, leading to outbreaks.
    • Diagnostic Importance: Presence in water is a key indicator of faecal contamination.

    Bio-Sensors Generated Using E. coli

    • Innovation: Genetically engineered E. coli used as self-powered chemical biosensors.
    • Mechanism: Detect compounds, process signals, and produce electrical outputs compatible with low-cost electronics.
    • Modules:
      • Sensing Module: Detects target molecules.
      • Processing Module: Amplifies or modifies signals.
      • Output Module: Produces phenazines measurable via electrochemistry.
    • Applications:
      • Detected arabinose (plant sugar) within 2 hours.
      • Detected mercury ions in water at trace levels (below WHO safety limits) within 3 hours.
      • Demonstrated an “AND” logic gate, producing signals only when two molecules were present together.
    • Significance:
      • Cheaper, programmable, and robust alternative to enzyme-based biosensors.
      • Potential in environmental monitoring, water safety, medical diagnostics, and bioelectronics.
    [UPSC 2010] Which bacterial strain, developed from natural isolated by genetic manipulations, can be used for treating oil spills?

    (a) Agrodbacterium

    (b) Clostridium

    (c) Nitrosomonas

    (d) Pseudomonas*