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GS Paper: GS3-16.Achievements of Indians in Science & Technology

  • Chandrayaan-3 Update: Pragyan put to Sleep Mode

    Central Idea

    • Chandrayaan-3 accomplished India’s historic achievement of soft landing on the Lunar South Pole.
    • Its mission success marked by several noteworthy observations since touchdown on August 23.

    Chandrayaan-3’s: Key Achievements

    • Pragyan rover’s Laser-Induced Breakdown Spectroscopy (LIBS) instrument identified elements like aluminium, sulphur, calcium, iron, and more.
    • Vikram lander recorded a ‘moonquake’ and detected an ultra-thin layer of plasma in the lunar atmosphere.
    • These findings hint at distinct characteristics of the moon’s atmosphere compared to Earth.

    Significance of Observations

    • Sulphur discovery carries paramount importance in comprehending the moon’s origin and past surface (explosiveness) conditions.
    • The presence of significant sulphur amounts can provide insights into lunar volcanic activity, potentially indicating the presence of subterranean water.
    • Sulphur’s presence could offer clues about past lunar life support and constructing structures for human habitation.

    Exploring Lunar Water

    • Chandrayaan-3’s findings, particularly sulphur and oxygen on the moon’s surface, play a crucial role in narrowing down possible water sources.
    • The presence of sulphur and oxygen enhances the prospects of water detection.
    • ISRO was actively pursuing information about lunar hydrogen, another potential indicator of water.

    Other mission Lunar Discoveries

    • China’s Chang’e 5 mission unveiled a new lunar mineral, Changesite-(Y), and identified water in glass beads.
    • Chandrayaan-3’s sulphur detection aligns with the quest for similar glass beads.
    • NASA previously confirmed lunar water presence in shadowed craters and sunlit regions.

    Present status of Ch-3 Mission

    • Chandrayaan-3’s core objectives attained; Pragyan rover placed in ‘sleep’ mode.
    • The rover’s solar panels will recharge during the next lunar sunrise.
    • Plans to reactivate the rover for further observations remain underway.

  • 2023 Ramon Magsaysay Award to Indian Oncologist

    Ramon Magsaysay

    Central Idea

    • Dr. R. Ravi Kannan, a surgical oncologist and Director of Cachar Cancer Hospital and Research Centre (CCHRC) in Assam, has been named one of the 2023 Ramon Magsaysay Awardees.
    • His pioneering efforts have revolutionized cancer treatment in Assam by prioritizing people-centric and pro-poor healthcare solutions.

    Dr. Kannan’s Inspiring Work

    • Under Dr. Kannan’s guidance, CCHRC evolved from having limited facilities to encompassing 28 departments, including oncology, pathology, radiology, microbiology, epidemiology, and palliative care.
    • The hospital introduced pro-poor measures such as free treatment, lodging, meals, ad hoc employment for caregivers, and a homecare program to address patients’ challenges in continuing treatment due to poverty and distance.
    • The hospital team extended their support by providing training to family members in pain management and palliative care, and distributing free medicines.
    • As a result, the compliance rate for cancer treatment increased remarkably, from 28% to 70%.

    About Ramon Magsaysay Award

    • The Ramon Magsaysay Award, established in 1958, stands as a significant accolade, often referred to as Asia’s equivalent of the Nobel Prize.
    • This prestigious award honors individuals and organizations in Asia for their exceptional contributions to society across various domains.

    Who was Ramon Magsaysay?

    • Ramon Magsaysay was the Philippines’ president from 1953 until his tragic death in a plane crash in 1957.
    • He gained prominence during World War II when Japanese forces occupied the Philippines, then a US colony.
    • In December 1953, he was elected president from the Nationalist Party, the country’s oldest political party.
    • Post-war chaos gripped the Philippines in 1946, accompanied by a widening gap between the rich and poor, exacerbated by the expansion of capitalism.
    • Amidst suspicions of communist affiliations and demands for peasant rights, leaders were targeted by the government, aligned with the USA.
    • Magsaysay’s administrative and military strategies played a pivotal role in countering the perceived threat of communism.

    Indian Awardees: A Legacy of Excellence

    Eminent Indians have been recognized through the Ramon Magsaysay Award:

    1. Vinoba Bhave (1958)
    2. Mother Teresa (1962)
    3. Kamaladevi Chattopadhyay (1966)
    4. Satyajit Ray (1967)
    5. Mahasweta Devi (1997)
    6. Arvind Kejriwal (2006)
    7. Anshu Gupta of Goonj (2015)
    8. Bezwada Wilson, human rights activist (2016)
    9. Ravish Kumar, journalist (2019)

    Significance of the Award

    • The Ramon Magsaysay Award symbolizes a deep commitment to altruism and service, acknowledging outstanding contributions that make a positive impact on society.
    • It is a reminder that individuals and organizations can effect transformative change through their selfless efforts.

  • Nabhmitra: Satellite-Based Safety Device for Fishermen

    nabhmitra

    Central Idea

    • The ISRO Space Applications Centre (Ahmedabad) has developed ‘Nabhmitra,’ a groundbreaking device designed to enhance the safety of fishermen during their maritime activities.

    About Nabhmitra

    • Nabhmitra employs satellite-based communication for seamless messaging services while at sea.
    • Weather alerts, cyclone warnings, and other critical information will be conveyed in the local language.
    • Fishermen can send distress messages during emergencies, such as capsizing or fires.
    • The device features an emergency button that enables direct communication with the control center.
    • Upon pressing the emergency button, the control center receives the alert along with the boat’s location. Simultaneously, the boat’s crew receives a response message from the control center.

    Benefits of Nabhmitra

    • Nabhmitra enhances the safety of fishermen by providing swift communication during emergencies.
    • Fishermen receive timely weather and cyclone alerts, aiding them in making informed decisions.
    • The device provides information about shipping channels, maritime boundaries, and fishing fields.
    • In the event of accidents or crises, the device streamlines communication between boats and authorities.

  • Chandrayaan-3 landing site called ‘Shiv Shakti’

    shiv shakti

    Central Idea

    • PM’s recent announcement of naming the Chandrayaan-3 lunar lander’s touch-down site as “Shiv Shakti” highlights the tradition of assigning names to significant points on celestial bodies.
    • The lunar landscape is peppered with such nomenclature, each reflecting a rich history of exploration and achievement.

    Lunar Ownership and the Outer Space Treaty

    • Global Exploration: The Moon, as a celestial body, remains beyond the jurisdiction of any single country. The Outer Space Treaty of 1966 declares that outer space, including celestial bodies like the Moon, cannot be claimed under national sovereignty.
    • Cooperation over Competition: The Treaty fosters international cooperation in space exploration while discouraging exclusive claims. It was developed during the Cold War to promote shared achievements and limit conflicts arising from superpower rivalry.

    Role of the International Astronomical Union (IAU)

    • Global Naming Authority: The IAU, with 92 member countries, plays a pivotal role in naming planetary features, including the Moon’s surface points.
    • Established Conventions: The IAU has overseen planetary and satellite nomenclature since its founding in 1919, aiming to standardize naming practices for better astronomical understanding.

    Nomenclature Process for Lunar Landmarks

    • Initiation: Initial naming suggestions for planetary features arise from IAU task group members or investigators involved in mapping or describing specific surfaces.
    • Review and Approval: Proposed names undergo review by task groups and the Working Group for Planetary System Nomenclature (WGPSN). Successful names become official IAU nomenclature and are entered into the Gazetteer of Planetary Nomenclature.
    • Considerations and Limitations: IAU’s guidelines emphasize simple and unambiguous names, avoiding political, military, or religious significance. Honouring individuals is acceptable after a three-year posthumous period.

    Legacy of Lunar Naming

    • Influential Factors: The quality of images from spacecraft has driven naming. Far-side craters were often named after scientists and engineers. Informal names given during missions eventually received official status.
    • Variability and Symbolism: Not all notable figures are honored with prominent crater names. The selection can seem arbitrary, with scientific prominence not guaranteeing crater-endowed immortality.
    • Cultural Inspirations: The IAU permits names from Greco-Roman mythology for Jupiter and Saturn’s satellites. Giants, monsters, and descendants of mythological figures have been added to the allowable source of names.

    India’s earlier Lunar Naming

    • Jawahar Sthal: India’s Chandrayaan-1 mission’s probe impact site was named “Jawahar Sthal” in honor of Jawaharlal Nehru, India’s first Prime Minister. His advocacy for scientific development and research in India inspired the gesture.

  • Indian start-up joins Sodium Ion Battery Innovation

    sodium ion battery

    Central Idea

    • Coimbatore-based start-up AR4 Tech has joined hands with Singapore’s Sodion Energy to revolutionize the energy storage landscape by producing sodium-ion battery packs for both local and global markets.
    • These sodium-ion batteries will find applications in converting conventional petroleum-based vehicles, primarily two-wheelers, into electric vehicles.

    What is Sodium Ion Battery (NIB)?

    • A NIB is a type of rechargeable battery that uses sodium ions as the charge carriers to store and release electrical energy.
    • Similar in principle to lithium-ion batteries, sodium-ion batteries offer an alternative energy storage solution with potential benefits such as cost-effectiveness and abundance of sodium resources.

    Key characteristics  

    • Working Principle: Sodium-ion batteries operate on the same basic principle as lithium-ion batteries. During charging, sodium ions are moved from the positive electrode (cathode) to the negative electrode (anode), and during discharge, they move back to the cathode, generating electrical energy in the process.
    • Sodium Anode: In a sodium-ion battery, the anode typically consists of materials that can intercalate (absorb) sodium ions during charging. Graphite and other carbon-based materials are commonly used for the anode in sodium-ion batteries.
    • Cathode Materials: Various materials can be used as cathodes in sodium-ion batteries, such as transition metal oxides or polyanionic compounds. These cathode materials allow sodium ions to be stored and released, enabling the battery’s energy storage function.
    • Electrolyte: The electrolyte in a sodium-ion battery is responsible for facilitating the movement of sodium ions between the anode and cathode during charge and discharge cycles. Sodium-ion batteries typically use a solid electrolyte or a liquid electrolyte containing sodium salts.

    Advantages offered

    • Abundance of Resources: Sodium is more abundant and widely available than lithium, which can potentially make sodium-ion batteries more cost-effective.
    • Environmental Impact: They may have a lower environmental impact compared to lithium-ion batteries due to the more widespread availability of sodium resources.

    Challenges

    • Energy Density: Sodium-ion batteries generally have lower energy density compared to lithium-ion batteries, which can limit their use in applications requiring high energy storage capacity.
    • Cycle Life: Ensuring a long cycle life (the number of charge and discharge cycles a battery can go through before losing capacity) remains a challenge for sodium-ion batteries.

  • K Kasturirangan explains: Chandrayaan-3 and India’s Evolving Space Ambitions

    Central Idea

    • The successful Chandrayaan-3 mission not only marks a significant achievement for India’s space program but also signifies the nation’s attainment of a pivotal capability: direct physical access to another celestial body.
    • This accomplishment propels India into an elite group of spacefaring nations and affords participation in shaping future planetary exploration endeavors and resource extraction from space.

    Who is Dr. K. Kasturirangan?

    • Dr. K. Kasturirangan is a prominent Indian space scientist and engineer.
    • He led ISRO as Chairman from 1994 to 2003, overseeing achievements like PSLV launches and Chandrayaan-1.
    • Chandrayaan-1, under his leadership, discovered water molecules on the Moon.
    • He’s been active in promoting science education and enhancing research quality.
    • Dr. Kasturirangan chaired the committee behind India’s NEP 2020, focusing on holistic education.
    • His accolades include Padma Shri and Padma Bhushan awards.
    • He’s been involved in international collaborations and represented India globally.
    • Besides leadership, he’s made academic contributions in space and atmospheric sciences.
    • His influence spans various positions in scientific and academic institutions.

    India’s Integration into Planetary Exploration and Decision-Making

    • Access to Celestial Bodies: Chandrayaan-3 provides India with a tangible gateway to planetary bodies, elevating its status in space exploration.
    • Frontiers of Technology: India’s pioneering capabilities place it at the forefront of space technology, enabling participation in shaping future planetary explorations and resource extraction policies.
    • A Seat at the Table: India’s involvement in this realm positions it naturally within the club of nations that influence and formulate space-related policies, ending a history of exclusion.

    Now, India’s stature in Global Space Dynamics

    • Historical Context: India’s past exclusion from technological clubs has driven its pursuit of self-reliance and global influence, transforming from a dependent to a self-sufficient nation.
    • Space Diplomacy: Space capabilities will play a pivotal role in shaping global equations in the 21st century, and India’s active participation will bolster its international standing.
    • Equitable Contributions: Chandrayaan-3 bolsters India’s potential to play a decisive role in space-related international decision-making, strengthening its voice on equal terms.

    Chandrayaan-3’s Significance for ISRO

    • Planetary Exploration Strategy: Chandrayaan-3 showcases ISRO’s comprehensive planetary exploration capabilities, encompassing satellite deployment, lunar orbits, surface study, and landing.
    • Direct Lunar Access: The mission grants India direct physical access to the Moon, offering new avenues for lunar exploration and resource utilization.
    • Kasturirangan’s Vision: The vision of Dr. K. Kasturirangan, former ISRO chairman, harmonizes with Sarabhai’s principles, building upon a foundation of technological self-sufficiency.
    • Progressive Continuation: ISRO’s pursuits of planetary exploration and Chandrayaan missions align with the trajectory Kasturirangan initiated, enhancing the nation’s profile on the global stage.

    Completing the Transformation: From Development to Exploration

    • Sequential Alignment: ISRO’s evolution from developmental needs to commercial launches and now to scientific and planetary exploration reflects its responsiveness to India’s evolving requirements.
    • Government Support: ISRO’s consistent success has been underpinned by unwavering government backing, which has enabled the organization to expand its horizons.
    • Strategic Role: Space technology’s growing influence necessitates robust capabilities, and ISRO’s achievements foster meaningful international partnerships, enhancing India’s global prestige.

    Conclusion

    • Chandrayaan-3 is more than a singular event; it signifies India’s ascendancy as a formidable force in space exploration.
    • As the nation transitions from a developing to a developed status, its capabilities to explore, innovate, and collaborate extend far beyond Earth’s boundaries.
    • Chandrayaan-3’s impact extends beyond the Moon’s surface, fostering diplomatic connections, winning allies, and amplifying India’s influence on the global stage under the visionary guidance of Dr. K. Kasturirangan.

  • LCA Tejas successfully test-fires Astra BVR Air-to-Air Missile

    astra

    Central Idea

    • The Light Combat Aircraft (LCA) Tejas has achieved another milestone with the successful test firing of the indigenous Beyond Visual Range (BVR) air-to-air missile called Astra.

    Indigenous Marvel of Astra Missile

    • The Astra missile is an indigenous Beyond Visual Range (BVR) air-to-air missile developed by the Defence Research and Development Organisation (DRDO) of India.
    • The missile is intended for use by both the Indian Air Force (IAF) and the Indian Navy.

    Purpose and Capability

    • Astra is designed to engage and eliminate high-speed, agile aerial targets in air combat scenarios.
    • It boasts advanced air combat capabilities and can engage multiple high-performance targets simultaneously.

    Aircraft Integration

    • Astra is integrated with various aircraft platforms, including the Su-30MKI fighter jet, Mirage 2000 multi-role combat fighters, Tejas light combat aircraft (LCA), MiG-29 and MiG-21 Bison fighter jets, and the Indian Navy’s Sea Harrier jet fighter.

    Features and Specifications

    (A) Design:

    • The missile is designed for high agility, accuracy, and reliability, ensuring a high single-shot kill probability (SSKP).
    • Astra measures approximately 3.8 meters in length and has a diameter of 178mm.
    • It has a launch weight of around 160 kilograms.

    (B) Advanced Variants:

    • DRDO is working on developing an advanced variant called Astra Mk-II.
    • Astra Mk-II is expected to have an extended range of 160 kilometers.

    (C) Guidance and Warhead:

    • The missile utilizes dual-mode guidance for accurate target tracking.
    • It is equipped with a high-explosive pre-fragmented warhead for effective engagement against threats.

    (D) Propulsion and Performance:

    • The Astra missile is powered by a smokeless, single-stage, solid fuel propulsion system.
    • It is capable of achieving launch speeds ranging from Mach 0.4 to Mach 2.

    (E) Launch Range and Agility:

    • The missile’s launch range is approximately 80 kilometers.
    • It can execute maneuvers with up to 40 g turns near sea level while engaging moving targets.

    Collaborative Development

    • Astra Mk-III, a variant of the missile, is being developed in collaboration with Russia.
    • This variant employs advanced solid fuel ducted ramjet (SFDR) engine technology.

    Back2Basics: LCA Tejas

    lca

    • Origin: The LCA Tejas is an indigenous light combat aircraft developed by the Aeronautical Development Agency (ADA) in collaboration with the Hindustan Aeronautics Limited (HAL) in India.
    • Purpose: LCA Tejas is designed as a multi-role supersonic fighter aircraft for the Indian Air Force (IAF) and the Indian Navy.
    • Variants: There are two main variants of LCA Tejas:
    1. LCA Tejas Mark-I: Developed for the Indian Air Force, it is a single-seat, single-engine aircraft.
    2. LCA Tejas Mark-I Navy: Designed for the Indian Navy, it is adapted for carrier operations with features like reinforced landing gear and arrestor hook.
    • Design and Features:
    1. LCA Tejas features a delta wing design for enhanced maneuverability and stability.
    2. The aircraft incorporates advanced avionics, glass cockpit, and digital fly-by-wire controls.
    3. It is equipped with modern radar systems, electronic warfare systems, and weapons integration capabilities.
    • Powerplant: LCA Tejas is powered by a single engine, the General Electric F404-GE-IN20 turbofan engine.
    • Armament: The aircraft can carry a variety of air-to-air and air-to-ground munitions, including missiles, bombs, and rockets.
    • Performance:
    1. The aircraft has a maximum speed of around Mach 1.8 (1,390 mph or 2,240 km/h).
    2. Its operational range is approximately 500 kilometers (310 miles).
    3. LCA Tejas has a service ceiling of around 50,000 feet (15,240 meters).
    • Induction and Service:
    1. The LCA Tejas Mark-I was officially inducted into the Indian Air Force in July 2016.
    2. The aircraft has participated in various national and international airshows, showcasing its capabilities.
    • Development and Challenges:
    1. The development of LCA Tejas faced several challenges, including technical and financial issues, leading to delays.
    2. However, the successful development and induction of the aircraft marked a significant achievement for India’s aerospace industry.

  • Gene-edited mustard: Less pungent, more useful

    What’s the news?

    • Scientists have used gene editing to create mustard plants with lower glucosinolate levels in seeds, improving their suitability for cooking oil and animal feed, potentially reducing India’s reliance on imported vegetable oils.

    Central idea

    • India’s domestically grown oilseeds, like rapeseed and mustard, provide cooking oil and protein-rich livestock meals. However, the pungent flavor from high glucosinolate levels limits consumer appeal, and an unpalatable meal poses livestock challenges. A genetic breakthrough offers hope, potentially transforming mustard’s applications.

    Rapeseed-Mustard: A Key Crop

    • Rapeseed-mustard plays a vital role in India’s oilseed landscape, accounting for 42.6% of vegetable oil production and 30.3% of meal production, second only to soyabean.
    • Glucosinolates in mustard seeds contribute to the characteristic pungency of their oil and meal.

    What is glucosinolate?

    • Glucosinolates are a group of sulfur- and nitrogen-containing compounds found in plants, including rapeseed-mustard.
    • These compounds contribute to the distinctive pungent taste and aroma of mustard seeds and other cruciferous vegetables.
    • The glucosinolates in mustard seeds are responsible for their characteristic flavor but can also limit their acceptability for consumption and livestock feed due to their strong taste and potential negative effects on animals.

    The Distinction Between GE and GM Crops

    1. Genetically Modified (GM) Crops:
    • Contain foreign genes from other species, such as Bacillus thuringiensis bacteria in cotton or Bar-Barnase-Barstar in GM hybrid mustard.
    • Subject to stringent environmental release regulations in India, requiring clearance from the Genetic Engineering Appraisal Committee (GEAC) under the Ministry of Environment.
    • GEAC’s approval is not solely binding; final authorization comes from the Union Government.
    1. Genetically Edited (GE) Crops:
    • Are transgene-free or non-GM, containing no foreign genes.
    • The Cas9 enzyme, used for gene editing, is eliminated in subsequent generations, resulting in transgene-free lines.
    • Benefit from an exemption provided by the MoEFCC on the requirement for GEAC approval for open field trials of GE plants free of exogenous introduced DNA.
    • Approval is now necessary at the level of an Institutional Bio-Safety Committee (IBSC) comprising scientists engaged in GE crop development and the DBT.

    A Breakthrough in Gene Editing

    • Researchers, including those at Delhi University and the Indian Council of Agricultural Research, have employed CRISPR/Cas9 gene editing to address the glucosinolate issue.
    • They edited 10 out of 12 GTR genes in the Varuna mustard variety, significantly reducing glucosinolate content in seeds while maintaining higher levels in leaves and pod walls.
    • This editing also improved resistance to fungal pathogens and insect pests, enhancing the plant’s defense mechanisms.

    Significance of this development

    • Reducing Edible Oil Imports: India’s significant dependence on edible oil imports, valued at $20.84 billion (Rs 167,270 crore) for the FY ending March 2023, underscores the need to curb foreign exchange outflow and enhance domestic production.
    • Addressing Economic Strain: The extensive import value strains India’s trade balance and foreign exchange reserves, making it imperative to boost self-reliance in edible oil production.
    • Promoting Agricultural Self-Sufficiency: This development aligns with India’s goal of achieving greater agricultural self-sufficiency by reducing reliance on imports and enhancing domestic oilseed production.
    • Impact on Oilseed Crops: Mustard and soyabean, cultivated across 9 million and 12.5 million hectares, respectively, are key to India’s oilseed sector. Mustard’s higher oil-extractable content of 38% accentuates its significance.
    • Nutritional and Livestock Benefits: Mustard’s improved suitability for culinary and animal feed purposes positively impacts both human nutrition and the livestock sector.
    • Scientific Innovation: The creation of genetically edited (GE) low-seed, high-leaf glucosinolate mustard lines and GM hybrid mustard showcases India’s scientific capabilities and innovation in agriculture.
    • Enhanced Food Security: By augmenting domestic oilseed production and quality, this development contributes to India’s food security and reduces its vulnerability to global market fluctuations.

    Conclusion

    • The genetic breakthrough in editing mustard genes offers potential to revolutionize India’s oilseed sector. By lowering seed glucosinolate levels and maintaining higher leaf levels, it improves culinary and feed suitability. As the GE variety undergoes trials, it addresses oil seed production, import reliance, and self-sufficiency needs.

     

     

  • Agnibaan: Pioneering with 3D-Printed Engines

    agni

    Central Idea

    • Chennai-based Agnikul Cosmos takes a significant step as it moves its innovative rocket, Agni-1, to Sriharikota for integration assessments.
    • Successful integration checks could position Agnikul as the second Indian space-tech firm, following Skyroot Aerospace, to achieve suborbital space flight capability.

    Agnikul’s Remarkable Space Vehicle: Agnibaan

    • Agnibaan SOrTeD is a single-stage launch vehicle powered by Agnikul’s patented Agnilet semi-cryogenic engine.
    • In contrast to traditional sounding rockets, Agnibaan SOrTeD’s vertical take-off and precise trajectory enable orchestrated maneuvers during flight.

    (A) Distinct Features of Agnibaan

    • Customizability: The rocket offers custom launch configurations, either single or two-stage launches.
    • Impressive Dimensions: Standing at 18 meters and weighing 14,000 kg, Agnibaan SOrTeD is a powerful presence.
    • Payload Capacity: With a capacity for payloads of up to 100 kg, it can reach altitudes of 700 km in five different Lower Earth Orbits (LEOs).
    • Engine Configuration: The first stage can house up to seven Agnilet engines, powered by Liquid Oxygen and Kerosene, dependent on the mission’s requirements.
    • Versatile Launch: Designed for launch from over 10 different launch ports.
    • Launch Pedestal ‘Dhanush’: AgniKul’s built ‘Dhanush’ supports the rocket’s mobility across configurations, ensuring compatibility with multiple launch ports.
    • Cutting-Edge Agnilet Engine: The world’s sole single-piece 3D-printed engine powers the entire operation.

    (B) Innovative Agnilet Engine

    • Heart of the Vehicle: Agnilet engine, a 3D-printed, single-piece, 6 kN semi-cryogenic marvel, drives Agnibaan’s propulsion.
    • Propellant Composition: The engine employs a novel blend of liquid kerosene and supercold liquid oxygen as propellants, successfully tested at the Vikram Sarabhai Space Centre.

  • ISRO gears up for Aditya-L1 Mission

    aditya-l1

    Central Idea

    • Although the mission launch date is yet to be announced, the Aditya-L1 satellite has arrived at the Satish Dhawan Space Center (SDSC) in Sriharikota, Andhra Pradesh, for integration with the launch vehicle, PSLV.

    Aditya-L1 Mission

    • Aditya-L1’s primary objective is to closely observe the Sun and gather insights into its corona, solar emissions, flares, solar winds, and Coronal Mass Ejections (CMEs).
    • The satellite is equipped with seven advanced payloads for these scientific endeavors.
    • The mission promises round-the-clock imaging of the Sun, enabling an unprecedented understanding of its behavior and impacts.

    Significance of the mission

    • Solar Influence: The evolution of every celestial body, including Earth and distant exoplanets, is intricately linked to its parent star. The Sun’s weather and environment have a profound impact on the entire solar system.
    • Space Weather Impact: Variations in solar activity can disrupt satellite orbits, damage electronics, trigger power blackouts, and induce disturbances on Earth. Accurate knowledge of solar events is essential for comprehending and predicting space weather phenomena.

    L1 Lagrange Point Advantage

    • Continuous Solar Observations: Positioned at the Lagrangian Point 1 (L1) — about 1.5 million km from Earth — Aditya-L1 will be uniquely positioned to observe the Sun without the interference of occultation or eclipses. L1 is an orbital location where gravitational forces create stable regions of attraction and repulsion.
    • L1’s Significance: The Solar and Heliospheric Observatory Satellite (SOHO) is stationed at L1 and has facilitated groundbreaking solar research. Aditya-L1’s observations will contribute to a more comprehensive understanding of solar behavior.

    Comparison with International Missions

    • Closer than Ever: While NASA’s Parker Solar Probe has ventured closer to the Sun, Aditya-L1 will focus on direct solar observations from a greater distance.
    • Technical Challenges: Many instruments and components for Aditya-L1 are being developed in India for the first time, representing both a challenge and an opportunity for the nation’s scientific and engineering communities.