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

  • Vehicle-to-Vehicle Communication Technology 

    Why in the News?

    The Government of India is preparing to roll out Vehicle To Vehicle (V2V) communication technology by the end of 2026 to significantly reduce road accidents, especially during fog, rear end collisions, and pile ups.

    What is Vehicle To Vehicle (V2V) Technology

    • A direct communication system that allows vehicles to exchange information with each other
    • Works without mobile network or internet
    • Vehicles send and receive real time safety alerts when another vehicle comes dangerously close
    • Nodal Ministry: Ministry of Road Transport and Highways

    How the V2V System Works

    • A SIM like communication device installed inside vehicles
    • Vehicles broadcast signals about: Speed, Position, Direction and Sudden braking
    • Nearby vehicles receive instant alerts and warn drivers

    Key Features

    • 360 degree communication: Alerts received from all sides of the vehicle
    • Distance warning system: Warns drivers if another vehicle comes too close
    • Stationary vehicle detection: Alerts about parked or broken down vehicles on roads
    • Fog safety: Highly effective during low visibility conditions
    • Pile up prevention: Reduces chances of multi vehicle collisions on highways
    [2023] Consider the following actions: 

    1. Detection of car crash/collision which results in the deployment of airbags almost instantaneously 

    2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive

    3. Detection of the tilt of the smart phone which results in the rotation of display between portrait and landscape mode 

    In how many of the above actions is the function of accelerometer required? 

    (a) Only one (b) Only two (c) All three (d) None

  • Dust Experiment (DEX) 

    Why in the News?

    Indian Space Research Organisation has confirmed that an interplanetary dust particle enters Earth’s atmosphere roughly every 16 minutes, based on observations from India’s first cosmic dust detector Dust Experiment (DEX).

    About Dust Experiment (DEX)

    • India’s first indigenously developed cosmic dust detector
    • Designed to detect and measure high speed interplanetary and orbital dust particles
    • Studies dust impacts in Earth’s upper atmosphere

    Developed by

    • Indian Space Research Organisation
    • Physical Research Laboratory, Ahmedabad

    Mission Platform

    • Flown aboard PSLV Orbital Experimental Module (POEM)
    • Part of PSLV C58 XPoSat mission

    Aim

    • Direct measurement of cosmic dust flux
    • Improve understanding of space environment
    • Enhance satellite safety and planning of future crewed deep space missions

    Prelims Pointers

    • DEX is India’s first cosmic dust detector
    • Operates from PSLV POEM
    • Measures interplanetary dust particles
    • IDPs originate from comets and asteroids
    • Critical for satellite protection and deep space missions
    [2011] What is the difference between asteroids and comets? 

    1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material

    2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury

    3. Comets show a perceptible glowing tail, while asteroids do not. 

    Which of the statements given above is/are correct? 

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

  • Spina Bifida in India  

    Why in the News?

    India continues to report one of the highest global burdens of Spina Bifida, despite strong scientific evidence that pre conception folic acid intake can prevent more than 70 percent of cases.

    What is Spina Bifida

    • A congenital neural tube defect
    • Occurs when the spinal cord and its protective coverings fail to develop properly
    • Develops during early pregnancy, usually within the first 28 days after conception
    • Leads to lifelong disability of varying severity
    • Non communicable and Non infectious

    Causes

    • Caused by abnormal closure of the neural tube
    • Inadequate folic acid intake before and during early pregnancy
    • Poor maternal nutrition and anaemia
    • Unplanned pregnancies without micronutrient supplementation
    • Possible genetic susceptibility combined with environmental factors

    Treatment and Management

    • Early surgical repair: Closure of the spinal defect soon after birth to prevent infection
    • Hydrocephalus management: Use of ventriculo peritoneal shunt to drain excess fluid
    • Rehabilitation care: Long term physiotherapy and occupational therapy
    • Orthopaedic interventions: Corrective surgeries, braces or casts for skeletal deformities

    Prevention

    • Daily folic acid supplementation before conception and during early pregnancy
    • Food fortification and maternal nutrition programmes
    • Awareness about planned pregnancies
    • Integration with maternal health schemes

    Prelims Pointers

    • Spina bifida is a neural tube defect
    • Neural tube closes within 28 days of conception
    • Folic acid deficiency is the most important risk factor
    • Prevention is more effective than post birth treatment
    [2023] Consider the following statements in the context of interventions being undertaken under Anaemia Mukt Bharat Strategy: 

    1. It provides prophylactic calcium supplementation for pre-school children, adolescents and pregnant women. 

    2. It runs a campaign for delayed cord clamping at the time of child-birth

    3. It provides for periodic deworming to children and adolescents

    4. It addresses non-nutritional causes of anaemia in endemic pockets with special focus on malaria, hemoglobinopathies and fluorosis. 

    How many of the statements given above are correct? 

    (a) Only one (b) Only two (c) Only three (d) All four

  • ISRO and the next big challenge

    Why in the News

    ISRO’s recent string of successes, routine PSLV launches, Chandrayaan-3’s lunar landing, Aditya-L1’s solar orbit insertion, and the India-US NISAR mission has raised expectations sharply. Now for the first time, India’s challenge is no longer technological proof-of-concept but institutional maturity. Furthermore, India’s space programme is preparing for multiple high-complexity missions in parallel, including Gaganyaan, Chandrayaan-4, and the Next Generation Launch Vehicle (NGLV).

    Why is ISRO’s recent success described as “raising the bar”?

    1. Mission Reliability: Sustained success of the Polar Satellite Launch Vehicle has made reliable access to orbit almost routine.
    2. Planetary Achievement: Chandrayaan-3’s soft landing on the Moon in August 2023 placed India among a small group of lunar-landing nations.
    3. Solar Science Capability: Aditya-L1’s successful halo orbit insertion in January 2024 added a dedicated solar observatory to ISRO’s portfolio.
    4. International Collaboration: Launch of the NASA-ISRO Synthetic Aperture Radar (NISAR) mission demonstrated high-value global scientific cooperation.

    What fundamental shift can be identified in ISRO’s challenge?

    1. Institutional Transition: Moves focus from individual scientific feats to sustained organisational performance.
    2. Parallel Complexity: Requires simultaneous execution of human spaceflight, deep-space missions, and commercial launches.
    3. Expectation Management: Makes failure costlier as public, political, and international scrutiny increases.

    How does mission parallelisation strain ISRO’s existing systems

    1. Human Spaceflight Load: Gaganyaan preparation consumes engineering, testing, and safety-certification bandwidth.
    2. Science Programme Pressure: Planetary, solar, and Earth-observation missions compete for limited skilled manpower.
    3. Launch Vehicle Bottlenecks: GSLV and future NGLV development face cadence and scale constraints.

    Why are industrial capacity and regulatory clarity critical for ISRO’s next phase?

    1. Industrial Capacity: Current supplier base lacks depth to absorb shocks or scale production without delays.
    2. Supply Chain Fragility: Over-reliance on ISRO facilities makes anomalies system-wide bottlenecks.
    3. Regulatory Ambiguity: Absence of a clear space law creates uncertainty around liability, insurance, and commercial risk allocation.

    What role does the private space ecosystem play in this transition?

    1. Commercial Dependence: Private launch providers remain reliant on ISRO infrastructure and expertise.
    2. Institutional Separation: IN-SPACe and NSIL must evolve from facilitation bodies to autonomous regulatory and commercial entities.
    3. Routine Operations: Private participation is necessary to make launches, manufacturing, and satellite services routine rather than exceptional.

    Why is governance reform central to ISRO’s next phase?

    1. Legal Authority: ISRO lacks statutory backing for authorisation, dispute resolution, and commercial oversight.
    2. Regulatory Burden: Ad-hoc decisions persist due to absence of a comprehensive space law.
    3. Systemic Resilience: Institutionalised processes are required to reduce dependence on individual leadership or mission-specific improvisation.

    Conclusion

    ISRO’s future success depends on its ability to transform from a mission-centric organisation into a mature space institution, supported by industrial depth, legal clarity, and governance reform. The decisive test is whether India’s space programme can make complexity routine without diluting reliability.

    PYQ Relevance

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

    Linkage: This PYQ tests understanding of India’s space capabilities and their role in national socio-economic development. The article advances this by highlighting the need to move from mission successes to institutional sustainability, regulatory clarity, and routine execution to sustain long-term benefits.

  • India Becomes First Nation to Commercially Produce Bio Bitumen

    Why in the News?

    India has become the first country in the world to commercially produce bio bitumen, according to Union Minister for Road Transport and Highways Nitin Gadkari. The announcement highlights India’s push towards sustainable infrastructure and green alternatives in road construction.

    Bio Bitumen

    Bio bitumen is an eco friendly binding material used in road construction. It is produced from renewable biological sources instead of petroleum based crude derivatives.

    Raw materials used

    • Vegetable oils
      • Crop stubble and agricultural residue
      • Other forms of organic and agro waste

    Economic significance

    • With 15 percent blending, India can save nearly ₹4,500 crore in foreign exchange
      • Lowers import bill for petroleum based bitumen
      • Opens new income streams for farmers through agro waste supply
      • Generates rural employment and livelihood opportunities

    Prelims Pointers

    • India is the first nation to commercially produce bio bitumen
      • Bio bitumen is made from renewable biological sources
      • Used in road construction as a binding material
      • Helps reduce stubble burning and crude oil imports
      • Contributes to circular economy and sustainable development
    [2011] In the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this material? 

    1. Unlike traditional asphalt, bio-asphalt is not based on fossil fuels

    2. Bioasphalt can be made from non-renewable resources

    3. Bioasphalt can be made from organic waste materials

    4. It is eco-friendly to use bioasphalt for surfacing of the roads

    Select the correct answer using the code given below: 

    (a) 1, 2 and 3 only (b) 1, 3 and 4 only (c) 2 and 4 only (d) 1, 2, 3 and 4

  • White dwarf system

    Why in the News?

    NASA’s Imaging X-ray Polarization Explorer (IXPE) has, for the first time, probed the internal structure of a white dwarf binary system by studying X ray polarisation. Observations of EX Hydrae revealed unexpected details about gas flows, magnetic accretion, and reflected X ray emission.

    Significance of IXPE observations

    • Enabled estimation of the height of hot accretion columns.
    • Detected X rays reflected off the white dwarf surface, a first for such systems.
    • Provided direct evidence to test theories of accretion physics, magnetic fields, and extreme states of matter.

    White Dwarf System

    A white dwarf system usually consists of a white dwarf and a companion star bound in a binary system. Matter from the companion is pulled towards the white dwarf due to its strong gravity.

    How it forms

    • A Sun like star exhausts nuclear fuel and sheds outer layers as a planetary nebula.
    • The leftover dense core becomes a white dwarf.
    • In binary systems, gas from the companion star accretes onto the white dwarf.
    • EX Hydrae belongs to a class called intermediate polars, where a moderate magnetic field partially disrupts the accretion disc and channels gas along magnetic field lines.

    Key characteristics

    • Extreme density: Mass comparable to the Sun, radius similar to Earth.
    • Degenerate matter: Supported by electron degeneracy pressure based on the Pauli Exclusion Principle, not fusion.
    • High energy emissions: Infalling gas heats to tens of millions of degrees, producing X rays.
    • Magnetic accretion: Gas flows in columns rising thousands of kilometres above the surface.
    • Chandrasekhar limit: Maximum stable mass about 1.4 times the Sun.

    Prelims Pointers

    • IXPE studies X ray polarisation, not imaging alone.
    • EX Hydrae is an intermediate polar type white dwarf system.
    • Accretion driven X ray emission occurs due to magnetic channeling.
    • White dwarfs are supported by electron degeneracy pressure.
    [2009] Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die? 

    (a) Edwin Hubble 

    (b) S. Chandrashekhar 

    (c) Stephen Hawking 

    (d) Steven Weinberg

  • Pralay Missile 

    Why in the News?

    Defence Research and Development Organisation conducted a salvo launch of two Pralay missiles in quick succession from the same launcher off the Odisha coast, marking a key milestone in user evaluation trials.

    About Pralay Missile

    Pralay is an indigenously developed, solid propellant, quasi ballistic, surface to surface missile designed for high precision conventional strikes against tactical and operational targets.

    Aim

    • Rapid response conventional strike capability for Indian Army and Indian Air Force
     • Battlefield dominance through precision strikes and saturation capability

    Key Features

    • Type: Quasi ballistic surface to surface missile
       • Range: 150 km to 500 km
       • Propulsion: Solid propellant for quick launch readiness
       • Trajectory: Quasi ballistic trajectory, difficult to intercept by enemy air defence systems
       • Guidance: Advanced guidance and navigation system for high accuracy
       • Warhead: Multiple conventional warhead options
       • Salvo launch capability: Multiple missiles fired in quick succession from the same launcher

    Significance

    • Strengthens indigenous missile capability under Atmanirbhar Bharat
      • Enhances conventional deterrence without nuclear escalation
      • Improves operational readiness, survivability, and strike effectiveness
      • Supports precision warfare doctrine of Indian armed forces
    Consider the following statements: [2023]

    1. Ballistic missiles are jet-propelled at subsonic speeds throughout their flights, while cruise missiles are rocket-powered only in the initial phase of flight. 

    2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile. 

    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

  • PathGennie Software

    Why in the News?

    The Ministry of Science and Technology has announced the development of PathGennie, a new open-source computational software that can significantly speed up drug discovery by accurately simulating drug–protein unbinding, a crucial step in understanding drug efficacy and safety.

    What is PathGennie?

    • PathGennie is an open-source computational framework designed to simulate rare molecular events, especially the unbinding of drugs from protein targets.
    • It helps in predicting drug residence time, a key parameter that determines how long a drug remains effective inside the body.
    • It avoids artificial distortions commonly introduced in conventional simulation methods.

    Developed by

    • Scientists at the S. N. Bose National Centre for Basic Sciences, Kolkata.

    Aim of PathGennie

    • To overcome the limitations of traditional molecular dynamics simulations, which struggle to capture slow and rare molecular transitions.
    • To generate physically accurate pathways for drug–protein interactions.
    • To reduce computational time and cost without compromising accuracy.

    Applications

    • Predicts accurate drug unbinding pathways and residence times
      • Example: Imatinib with Abl kinase
    • Improves understanding of protein–ligand kinetics for better drug design
    • Applicable beyond drug discovery in: Chemical reactions, Catalysis, Phase transitions and Molecular self-assembly

    Prelims Pointers

    • PathGennie is open-source and computational in nature
    • Focuses on drug unbinding, not just binding
    • Helps estimate drug residence time, a key pharmacological parameter
    • Avoids artificial bias unlike conventional simulation techniques
    • Developed in India under the Ministry of Science and Technology
    [2022] Consider the following: 

    1. Aarogya Setu 

    2. CoWIN 

    3. DigiLocker 

    4. DIKSHA. 

    Which of the above are built on top of open-source digital platforms? 

    (a) 1 and 2 only (b) 2, 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4

  • [1st January 2026] The Hindu OpED: India’s space programme, a people’s space journey

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

    Linkage: The article illustrates India’s progression from landmark space missions to a citizen-centric space ecosystem supporting disaster management, agriculture, infrastructure, and governance.

    Mentor’s Comment

    India’s space programme has entered a decisive phase of transformation, from a state-led scientific endeavour to a people-centric strategic ecosystem. The article captures this transition by mapping India’s journey from symbolic achievements to institutional depth, private participation, and societal integration. It highlights how space has become a tool for governance, economy, national confidence, and global leadership, rather than remaining a niche scientific pursuit.

    Introduction

    India’s space programme is in focus following a series of firsts and institutional shifts that redefine its purpose and scale. From the Prime Minister’s articulation of Amrit Kaal goals to the operationalisation of the Indian Space Policy 2025, the sector is no longer limited to launches and missions. It now underpins disaster management, governance delivery, startup ecosystems, education, and international collaboration. The transformation is significant because it marks India’s shift from a mission-centric model to a citizen-facing, market-enabled, and globally integrated space ecosystem, an evolution rarely achieved by developing economies.

    How did India’s space journey evolve from inspiration to infrastructure?

    1. Foundational Vision: Established scientific self-reliance through indigenous launch vehicles and satellites, creating strategic autonomy in space access.
    2. Mass Participation: Chandrayaan missions generated nationwide engagement, embedding scientific ambition within public consciousness.
    3. Technological Maturity: Achieved precision landing, rover operations, and in-orbit docking, reflecting systemic depth beyond symbolic success.
    4. Societal Integration: Transitioned space assets from elite scientific use to everyday governance and citizen services.

    What milestones redefined India’s credibility as a space power?

    1. Chandrayaan-1: Confirmed presence of water molecules on the Moon, reshaping lunar science understanding.
    2. Chandrayaan-2: Delivered high-resolution lunar data despite partial mission failure, reinforcing learning-based innovation.
    3. Chandrayaan-3: Achieved first-ever soft landing near the lunar south pole, placing India among elite lunar explorers.
    4. Gaganyaan Preparations: Advanced human spaceflight readiness through crew module recovery and test vehicle missions.
    5. Aditya-L1 and SPADEX: Expanded capabilities into solar observation and in-orbit docking for future space stations.

    Why is the space sector being reframed as a national development tool?

    1. Disaster Management: Enables early warning systems, damage assessment, and real-time coordination.
    2. Agriculture and Fisheries: Supports crop estimation, drought monitoring, and marine resource advisories.
    3. Infrastructure and Transport: Enhances railway safety, urban planning, and power grid monitoring.
    4. Democratisation of Access: Positions space-derived data as a public good accessible to citizens and states.

    How is policy reform reshaping India’s space ecosystem?

    1. Indian Space Policy 2025: Institutionalises private sector participation across launch, satellite, and downstream services.
    2. Commercial Scaling: Facilitates startups in satellite manufacturing, launch vehicles, and data analytics.
    3. Economic Expansion: Increased sector valuation from ₹5,615 crore (2013-14) to ₹24,116 crore (2025-26).
    4. Employment Creation: Generates high-skill jobs across aerospace, AI, robotics, and materials science.

    What role do youth, education, and innovation play in this transition?

    1. Capacity Building: Engages over 60,000 students annually through Olympiads and space challenges.
    2. Innovation Platforms: Hackathons and competitions integrate academia with applied research.
    3. Startup Ecosystem: Over 350 startups contribute to satellite systems, launch services, and applications.
    4. Future Workforce: Strengthens STEM education pipeline aligned with emerging space technologies.

    How does India project leadership in global space governance?

    1. Climate Monitoring: Deploys satellites like G-20 Climate Satellite for global environmental observation.
    2. Data Sharing: Collaborates with NASA, ISRO, CNES, and ESA on Earth observation and planetary missions.
    3. Normative Leadership: Advances cooperative space use rooted in Vasudhaiva Kutumbakam.
    4. South-South Outreach: Provides satellite services and training to developing nations.

    Conclusion

    India’s space programme has evolved from a symbol of scientific aspiration into a core pillar of national development and strategic capability. By integrating space technology with governance delivery, economic expansion, private innovation, and global cooperation, India has repositioned space as a public good rather than an elite scientific pursuit. The transition towards human spaceflight, indigenous space infrastructure, and citizen-centric applications reflects a mature ecosystem aligned with the vision of Amrit Kaal. Sustained policy support, institutional coordination, and inclusive access will determine whether this transformation consolidates India’s role as a leading space power serving both national and global interests.

  • Pinaka Long Range Guided Rocket Maiden Flight Test

    Why in the News?

    India successfully conducted the maiden flight test of the Pinaka Long Range Guided Rocket off the Odisha coast. The rocket hit the target with textbook precision at its maximum range of 120 km.

    What is Pinaka LRGR

    • Long range guided rocket ammunition of the Pinaka multi barrel rocket system
      • Evolved from Pinaka Mark II
      • Designed for precision strikes at extended ranges

    Developed by

    • Armament Research and Development Establishment
      • High Energy Materials Research Laboratory
      • Research Centre Imarat
      • Defence Research and Development Laboratory
      • Under Defence Research and Development Organisation

    Key Features

    • Range: Up to 120 km
       • Guidance: Navigation, guidance and control kit for high accuracy
       • In flight manoeuvrability: Executed planned trajectory changes
       • Launcher compatibility: Fired from in service Pinaka launcher
       • Firepower: MBRL can fire 12 rockets in a salvo

    Operational Advantages

    • High accuracy reduces collateral damage
      • Quick reaction time and high rate of fire
       • Effective in low intensity conflict scenarios
       • Multiple Pinaka variants can be launched from the same platform
    [2023] Consider the following statements: 

    1. Ballistic missiles are jet-propelled at subsonic speeds throughout their flights, while cruise missiles are rocket-powered only in the initial phase of flight. 

    2. Agni-V is a medium-range supersonic cruise missile, while BrahMos is a solid-fuelled intercontinental ballistic missile. 

    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