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Subject: Space Technology

  • Project Suncatcher

    Why in the News?

    Google Research unveiled Project Suncatcher, a research initiative exploring AI datacentres in low Earth orbit powered entirely by solar energy, aimed at addressing the rapidly rising electricity demand of advanced AI systems.

    What is Project Suncatcher

    • A concept and research programme
    • Proposes placing AI datacentres in Low Earth Orbit
    • Datacentres operate continuously on solar power
    • Designed to handle energy intensive AI workloads
    • Developed under Google Research

    Objectives

    • Reduce the energy footprint of AI
    • Enable round the clock clean solar power
    • Decouple AI compute growth from
      • Terrestrial power grids
      • Land constraints
      • Water intensive cooling systems
    • Support long term scalability of AI infrastructure

    Prelims Pointers

    • Orbit used: Low Earth Orbit
    • Power source: Solar energy only
    • Developed by: Google Research
    • Key orbit type: Sun synchronous orbit
    • Core challenge addressed: AI energy demand
    • Emphasis on inter satellite communication over Earth links
    [2020] With the present state of development, Artificial Intelligence can effectively do which of the following? 

    1. Bring down electricity consumption in industrial units 

    2. Create meaningful short stories and songs 

    3. Disease diagnosis 

    4. Text-to-Speech Conversion 

    5. Wireless transmission of electrical energy 

    Select the correct answer using the code given below: 

    (a) 1, 2, 3 and 5 only (b) 1, 3 and 4 only (c) 2, 4 and 5 only (d) 1, 2, 3, 4 and 5

  • What is futuristic marine and space biotechnology

    Why in the News?

    India is exploring marine and space biotechnology to reduce dependence on imported bio-resources and better use extreme ecosystems. Despite having over 11,000 km of coastline and an Exclusive Economic Zone of more than 2 million sq km, domestic output remains limited, with seaweed production at around 70,000 tonnes annually. India still imports agar, carrageenan, and alginates, even though these can be produced locally. Initiatives such as the Deep Ocean Mission signal a shift from conventional coastal extraction to technology-driven biomanufacturing by linking marine biology with space research.

    What is Marine Biotechnology and Why is it Strategic?

    1. Definition: Studies marine microorganisms, algae, and animals to extract enzymes, bioactive compounds, biomaterials, and biostimulants.
    2. Industrial relevance: Supports production of food ingredients, pharmaceuticals, cosmetics, chemicals, and biofuels.
    3. Adaptive advantage: Marine organisms evolve under high pressure, low light, salinity, and low oxygen, producing novel biochemical pathways.
    4. Strategic gap: India imports seaweed-based inputs despite possessing rich marine biodiversity.

    What is Space Biotechnology and How is it Distinct?

    1. Definition: Examines biological processes under microgravity and radiation conditions.
    2. Research focus: Studies microbial behaviour, plant growth, human metabolism, and cellular regeneration in space.
    3. Industrial application: Enables advances in drug discovery, human health management, life-support systems, and bio-manufacturing in extreme environments.
    4. Institutional role: ISRO conducts microgravity experiments on microbes, algae, and biological systems.

    Why Does India Need Futuristic Marine and Space Biotechnology?

    1. Resource underutilisation: Vast EEZ remains biologically rich but economically underexploited.
    2. Import dependence: Relies on foreign suppliers for marine bio-compounds used in food and pharma.
    3. Biomanufacturing ambition: Supports transition from raw biomass extraction to value-added bio-industries.
    4. Sustainability imperative: Reduces pressure on terrestrial resources and supports circular bioeconomy.

    Where Does India Stand Today?

    1. Marine biomass production: Seaweed cultivation remains limited at ~70,000 tonnes annually.
    2. Policy push: Deep Ocean Mission supports exploration and sustainable use of deep-sea bioresources.
    3. Institutional ecosystem: ICAR-Central Marine Fisheries Research Institute and state initiatives (e.g., Gujarat) promote seaweed cultivation and marine bio-products.
    4. Space research: ISRO integrates biotechnology experiments into space missions.

    How Does Convergence of Marine and Space Biotechnology Create Value?

    1. Extreme biology: Enables understanding of life under pressure, radiation, and nutrient stress.
    2. Innovation pathway: Facilitates discovery of new enzymes, stress-resistant microbes, and regenerative mechanisms.
    3. Industrial scalability: Supports next-generation bioreactors, biofuels, and medical applications.
    4. Strategic positioning: Aligns India with global bioeconomy and frontier science trends.

    Conclusion

    Futuristic marine and space biotechnology offers India a technology-led pathway to convert ecological abundance into economic and strategic advantage. By integrating deep-sea exploration with space-based biological research, India can reduce import dependence, strengthen biomanufacturing capacity, and emerge as a global hub for bio-based industries, while ensuring sustainability and scientific leadership.

    PYQ Relevance

    [UPSC 2018] Why is there so much activity in the field of biotechnology in our country? How has this activity benefitted the field of biopharma?

    Linkage: India is expanding biotechnology into marine and space environments to access new biological resources. This supports biopharma growth, import substitution, and high-value biomanufacturing under GS-III.

  • PSLV-C62 Mission Failure

    Why in the News

    The Indian Space Research Organisation’s first launch of 2026, the PSLV-C62 mission, failed to place 16 satellites into the intended orbit on 12 January 2026. This marks the second consecutive failure of the Polar Satellite Launch Vehicle (PSLV), ISRO’s most reliable launch vehicle for over three decades.

    About PSLV-C62 Mission

    • Launch Vehicle: Polar Satellite Launch Vehicle
    • Payload: 16 satellites
      • Includes 7 foreign satellites
    • Mission outcome: Failed to reach intended orbit
    • Failure stage: Third stage (after successful completion of first two stages)

    Why the Failure Matters

    • PSLV is known as ISRO’s workhorse, with a long record of success since the 1990s.
    • This is the second straight PSLV failure, the first occurring in May 2025.
    • Consecutive failures raise concerns about reliability in the third stage, a critical phase of orbital insertion.

    Possible Cause of Failure

    • Exact cause not yet identified.
    • Based on the May 2025 failure, issues may relate to:
      • Drop in combustion chamber pressure in the third stage motor
      • Reduced thrust leads to insufficient acceleration needed to stabilise orbit
    • The Failure Analysis Committee report of the previous mission has not been made public.

    Why the Third Stage is Critical

    • The third stage provides high acceleration required to:
      • Maintain orbital velocity
      • Prevent premature orbital decay
    • Any pressure or thrust instability at this stage directly impacts mission success.

    PSLV: Four-Stage Configuration (Prelims Focus)

    1. First Stage
      • Solid propellant
      • Provides lift-off and overcomes gravity and atmospheric drag
      • Carries rocket to ~50–60 km altitude
    2. Second Stage
      • Liquid propellant
      • Improves velocity and stabilisation
    3. Third Stage
      • Solid motor
      • Provides rapid acceleration for orbital insertion
      • Most failure-prone stage in recent missions
    4. Fourth Stage
      • Liquid engines
      • Fine-tunes orbit and deploys satellites

    Prelims Pointers

    • PSLV is a four-stage launch vehicle.
    • Recent PSLV failures occurred during the third stage.
    • Combustion chamber pressure is critical for orbital velocity.
    • PSLV has been operational for over 30 years.
    • ISRO has not yet released the Failure Analysis Committee report for the 2025 failure.
    [2018] With reference to India’s satellite launch vehicles, consider the following statements: 

    1. PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites

    2. Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth

    3. GSLV Mk III is a four-stage launch vehicle with the first and third stages using solid rocket motors, and the second and fourth stages using liquid rocket engines. 

    Which of the statements given above is/are correct? 

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

  • 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

  • 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.

  • 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

  • What remote-sensing reveals about plants, forests and minerals from space

    Why in the News

    Remote sensing technologies are gaining prominence as satellites increasingly replace ground-based exploration in tracking forest health, groundwater depletion, pollution, and subsurface minerals. The article highlights how spectral imaging, gravity measurement, and magnetic field analysis allow detection of resources even without direct surface indicators such as seepage or excavation. 

    Introduction

    Remote sensing enables observation, measurement, and mapping of Earth’s surface and subsurface without physical contact. Satellites and drones detect reflected and emitted electromagnetic radiation across visible and invisible wavelengths. Each material, vegetation, water, rock, or mineral, exhibits a distinct spectral signature, allowing identification of composition, health, and location from space.

    How does remote sensing “see” beyond human vision?

    1. Electromagnetic Spectrum Use: Extends observation beyond visible light to infrared and ultraviolet bands, capturing information inaccessible to the human eye.
    2. Spectral Signatures: Enables identification of materials based on unique reflection and absorption patterns, similar to fingerprints.
    3. Sensor-Based Detection: Facilitates differentiation between healthy vegetation, stressed plants, water bodies, and rock types.

    How are plants and forests monitored from space?

    1. Chlorophyll Reflectance: Indicates plant health through high near-infrared reflection and low red-light absorption.
    2. Normalized Difference Vegetation Index (NDVI): Quantifies vegetation health using spectral data; identifies stress, disease, or drought.
    3. Forest Biomass Estimation: Supports measurement of forest weight and carbon storage, critical for climate change mitigation.
    4. Crop Stress Detection: Identifies nitrogen deficiency, disease, or pest stress before visible symptoms appear.

    How do satellites distinguish water from land and pollution?

    1. Normalized Difference Water Index (NDWI): Separates water bodies from land using visible and infrared reflectance.
    2. Modified NDWI (MNDWI): Improves accuracy by distinguishing water from shadows and built-up areas.
    3. Algal Bloom Detection: Tracks harmful algal blooms through specific spectral patterns.
    4. Pollution Monitoring: Enables identification of contaminated or stressed water bodies.

    How are underground minerals detected without digging?

    1. Surface Mineral Indicators: Identifies copper, gold, and lithium through surface spectral clues caused by geological uplift.
    2. Synthetic Aperture Radar (SAR): Penetrates cloud cover and storms to map terrain and flooding.
    3. Thermal and Reflectance Imaging: Detects exposed rock layers and folded geological structures.
    4. Spectral Mineral Mapping: Distinguishes limestone, granite, and sedimentary formations.

    How do satellites locate oil and gas without surface seepage?

    1. Geological Trap Identification: Detects anticlines and dome-shaped rock structures likely to trap hydrocarbons.
    2. Thermal Emission Sensors: Capture variations in exposed rock layers using instruments such as ASTER.
    3. Vegetation Stress Signals: Identifies chemical seepage affecting soil and plant colour.
    4. Magnetic Field Mapping: Differentiates sedimentary basins from basement rock, indicating oil-bearing potential.

    How is groundwater tracked from space?

    1. Gravity Measurement: Uses changes in Earth’s gravitational pull caused by water mass variations.
    2. Satellite Distance Variation: Detects groundwater loss through minute changes in satellite spacing.
    3. GRACE Mission Application: Demonstrated alarming groundwater depletion in North India due to irrigation.
    4. Aquifer Monitoring: Enables large-scale assessment without drilling wells.

    What limits do satellites face?

    1. Cloud Obstruction: Optical sensors cannot penetrate dense cloud cover.
    2. Indirect Detection: Subsurface resources inferred through geological proxies, not direct imaging.
    3. Resolution Constraints: Requires ground validation for precise extraction decisions.

    Why is remote sensing critical for sustainable resource management?

    1. Reduced Environmental Damage: Minimises invasive exploration and drilling.
    2. Efficient Resource Targeting: Narrows drilling and mining zones, reducing cost and risk.
    3. Conservation Planning: Prevents over-extraction beyond natural replenishment rates.
    4. Policy Support: Informs land-use planning, climate adaptation, and disaster management.

    Conclusion

    Remote sensing has redefined how humans observe, evaluate, and manage Earth’s resources. By translating invisible electromagnetic signals into actionable intelligence, satellites enable sustainable exploration, early environmental warning, and informed policymaking. As ecological pressures intensify, remote sensing will remain central to balancing development with conservation.

    PYQ Relevance

    [UPSC 2025] How can Artificial Intelligence (AI) and drones be effectively used along with GIS and RS techniques in locational and area planning? 

    Linkage: The question links settlement geography and regional planning with modern spatial tools, reflecting UPSC’s shift towards applied geography and evidence-based planning in GS-I. Integration of GIS, Remote Sensing, drones and AI strengthens urban-rural planning, disaster-prone area zoning and land-use decisions, core themes of Human and Economic Geography.

  • [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.

  • Titan

    Why in the News?

    Scientists have re examined data from NASA’s Cassini spacecraft and suggested that Saturn’s largest moon Titan may not have a global subsurface ocean, contrary to earlier studies.

    About Titan

    • Titan is the largest moon of Saturn
      • Second largest moon in the solar system, after Ganymede
      • Discovered in 1655 by Christiaan Huygens
      • Nearly 50 percent wider than Earth’s Moon
      • Only moon with a dense atmosphere
      • Atmosphere dominated by nitrogen with methane
      • Only body besides Earth with stable surface liquids
      • Presence of rivers, lakes, and seas
      • Liquids composed of methane and ethane

    Scientific Significance

    • Earlier models suggested a subsurface ocean
    • New findings indicate uncertainty in the existence or thickness of such an ocean
    • Important for understanding Titan’s internal structure
    • Affects assessment of potential habitability
    • Relevant for future planetary exploration missions

    Cassini Spacecraft

    • Cassini spacecraft was a joint mission of NASA, ESA, and ASI
    • Launched in 1997
    • First spacecraft to orbit Saturn
    • Studied Saturn, its rings, and moons
    • Carried the Huygens probe
    • Huygens landed on Titan in 2005
    • Provided first direct surface data from Titan
    Which of the following pairs is/are correctly matched? (2014)

    Spacecraft — Purpose: 

    I. Cassini-Huygens: Orbiting the Venus and transmitting data to the Earth. 

    II. Messenger: Mapping and investigating Mercury. 

    III. Voyager 1 and 2: Exploring the outer solar system. 

    Select the correct answer using the code given below: 

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

  • NASA Loses Contact with MAVEN  

    Why in the News?

    The National Aeronautics and Space Administration has lost contact with its Mars orbiter Mars Atmosphere and Volatile Evolution (MAVEN), which has been studying the Red Planet’s atmosphere for over a decade.

    About MAVEN Mission

    • Launch: by NASA
    • Launch site: Cape Canaveral, Florida
    • Mars orbit insertion: September 2014
    • Mission type: Mars orbiter
    • Primary objective: Study the loss of Mars atmosphere to space

    Scientific Objectives

    • Measure the thin upper atmosphere of Mars
    • Study the ionosphere, which consists of charged particles
    • Observe interaction of sunlight and solar wind with the Martian atmosphere
    • Explain how Mars changed from a warm and wet planet to a cold and dry one
    [2016] Consider the following statements: The Mangalyaan launched by ISRO: 

    1. is also called the Mars Orbiter Mission. 

    2. made India the second country to have a spacecraft orbit the Mars after USA. 

    3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt. 

    Which of the statements given above is/are correct? 

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