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Subject: Space ProgramsXIND

  • What is the main task of India’s third moon mission which could not be achieved in its earlier mission? List the countries that have achieved this task. Introduce the subsystems in the spacecraft launched and explain the role of the Virtual Launch Control Centre at the Vikram Sarabhai Space Centre which contributed to the successful launch from Srihari Kota.

    Chandrayaan-3 mission successfully landed near the lunar South Pole in August 2023. India not only redeemed the partial failure of its predecessor but also became the first nation to reach the Moon’s most scientifically coveted region.

    Main Task of Chandrayaan-3

    To demonstrate Safe and Soft Landing on the Lunar Surface. Chandrayaan-2 experienced a setback with the lander’s failure to achieve a soft landing.

    To demonstrate Rover roving on the moon and

    To conduct in-situ scientific experiments.

    Countries that have achieved moon mission

    The Soviet Union (USSR)

    The United States of America (USA)

    The People’s Republic of China

    The Republic of India

    Japan (Achieved post-Chandrayaan-3 in early 2024 via its SLIM mission)

    Subsystems of the Spacecraft

    Propulsion Module (PM): Carries the Lander Module from launch vehicle injection until it reaches the final 100 km circular polar lunar orbit, where separation occurs.

    Lander Module (LM): To demonstrate soft-landing capabilities at a specific lunar site and deploy the Rover.

    Scientific Payloads:

    ChaSTE: Measures thermal conductivity and surface temperature.

    ILSA: Monitors seismic activity around the landing site.

    RAMBHA Uses Langmuir Probe (LP) to measure near-surface plasma density and temporal variations.

    Laser Retroreflector Array: A passive instrument used for lunar laser ranging studies.

    Rover: Mobility across the lunar surface to conduct chemical analysis of the soil and rocks.

    Scientific Payloads:

    APXS (Alpha Particle X-ray Spectrometer): Derives the elemental composition of the lunar surface.

    LIBS (Laser Induced Breakdown Spectroscope): Identifies the chemical elements present in the vicinity of the landing site.

    Role of the ‘Virtual Launch Control Centre’ (VLCC)

    Remote System Checkouts: Allowed ISRO scientists to perform comprehensive remote testing of the LVM3-M4 rocket from Thiruvananthapuram.

    Parallel Monitoring: It acted as a digital twin to the Main Control Centre (MCC) at Sriharikota, providing an additional layer of real-time telemetry analysis and redundancy.

    Decentralized Coordination: Strategic hub that allows experts to monitor the health of the launch vehicle without overcrowding the primary launch site.

    By rectifying previous design limitations, India’s third lunar mission successfully completed its complex soft-landing task, solidifying ISRO’s status in elite global space exploration.


    Nano-technology, Bio-technology and other

  • India’s Space Odyssey: Prelims Quick Revision

    Why in News?

    The Government highlighted India’s achievements under Space Vision 2047, focusing on self-reliance, commercialization, and human spaceflight.

    Major Missions

    • Chandrayaan-3 (2023): First soft landing near Moon’s south pole; confirmed sulphur.
    • Chandrayaan-4 (2027): Lunar sample return mission.
    • LUPEX (2027-28): ISRO-JAXA mission to explore lunar polar ice.
    • Mangalyaan: First country to reach Mars on maiden attempt.
    • Aditya-L1: India’s first solar observatory at Sun-Earth L1.
    • Venus Orbiter Mission: Planned for 2028.
    • Gaganyaan: India’s first human spaceflight programme.
    • Bharatiya Antariksh Station (BAS): First module by 2028.

    Space Technology

    • SpaDeX (2025): India became 4th nation to achieve autonomous space docking.
    • NavIC: Indigenous navigation system covering India and 1,500 km beyond.
    • VIKRAM3201: First indigenous 32-bit space microprocessor.
    • RLV-TD: Developing reusable launch vehicle technology.

    Space Economy

    • Space startups: 1 (2014) → 400+ (2026).
    • Space economy: $8 billion, targeted to reach $40-45 billion by 2030.
    • Major reforms: IN-SPACe, NSIL, Indian Space Policy 2023, Liberalised FDI.

    Launch Infrastructure

    • Operational launch vehicles: PSLV, GSLV, LVM3.
    • NGLV under development (30-ton LEO capacity).
    • Second spaceport: Kulasekarapattinam, Tamil Nadu.
    • Third launch pad approved at Sriharikota.

    International Cooperation

    • NISAR: ISRO-NASA
    • TRISHNA: ISRO-CNES
    • LUPEX: ISRO-JAXA
    • Human spaceflight cooperation with ESA and Russia.

    Space Applications

    • Disaster management, Telemedicine, PM e-VIDYA, India-WRIS, Potential Fishing Zone advisories, and Satellite Aided Search and Rescue (SASAR).

  • 12 Years of India’s Scientific Transformation

    Why in the news?

    Union Minister Jitendra Singh highlighted the major achievements of India’s science and technology ecosystem over the last 12 years.

    Bioeconomy Growth

    • India’s bioeconomy expanded from about USD 10 billion (2014) to over USD 190 billion (2026).
    • Target: USD 300 billion by 2030.
    • Growth driven by innovations in Biotechnology, Genomics, Diagnostics, and Biopharmaceuticals.
    • Supported by the BioE3 Policy Framework.

    Space Sector Achievements

    • Space economy grew to around USD 8 billion and is projected to reach USD 45 billion in the next decade.
    • Space startups increased from single digits to over 400.
    • Major milestones: Chandrayaan-3 became the first mission to land near the Moon’s south pole. Gaganyaan preparations underway.
    • Future goals: Bharatiya Antariksh Station by 2035. Indian Moon landing by 2040.

    Weather and Climate Services

    • Weather radars increased from 17 (2014) to nearly 50 operational radars.
    • Another 50 radars planned under Mission Mausam.
    • Forecast coverage expanded from 300 cities to nearly 1,700 locations.
    • Expansion of Lightning detection systems, Rain-monitoring infrastructure, and Nowcast services for short-term forecasts.
    • Mission Mausam: Initiative aimed at strengthening India’s weather forecasting and disaster resilience capabilities through modern observation and prediction systems.

    Biotechnology and Healthcare

    • India emerged as a global biotechnology hub.
    • Advances include Affordable CAR-T cell therapy, Genomics and precision medicine, Next-generation antibiotics, and Indigenous diagnostics and vaccines.
    • India’s COVID-19 vaccines showcased domestic scientific capability.

    CSIR Innovations

    The Council of Scientific and Industrial Research (CSIR) expanded its outreach through:

    • Aroma Mission promoting high-value aromatic crops.
    • Steel slag road technology converting industrial waste into road-building material.
    • Technologies in healthcare, energy, infrastructure, and manufacturing.

    Deep Ocean Technologies

    • Development of Matsya 6000, India’s manned submersible.
    • Development of Varaha, an indigenous deep-sea mining system.

    Major Scientific Initiatives

    • Anusandhan National Research Foundation (ANRF)
    • National Quantum Mission
    • National Supercomputing Mission
    • Research Development and Innovation (RDI) Fund
    • National Geospatial Policy

    Nuclear Energy Reforms

    • Opening of the nuclear energy sector to greater private participation.
    • Expected to boost Investment, Innovation, and Capacity creation.

    [2022] Which one of the following is the context in which the term “qubit” is mentioned?

    [A] Cloud Services

    [B] Quantum Computing

    [C] Visible Light Communication Technologies

    [D] Wireless Communication Technologies

  • 100 Years of Solar Data Reveal Clues About Sun’s Activity Cycle

    Why in News?

    Scientists from Indian Institute of Astrophysics used over 100 years of observations from Kodaikanal Solar Observatory to study how convection patterns on the Sun are linked to the 11-year solar activity cycle.

    Key Highlights

    • Study based on: More than 34,000 Ca II K solar images.
    • Published in: Astrophysical Journal Letters.
    • Researchers examined:
      • Lane widths
      • Intensities
      • Their relation with sunspot numbers and solar cycles.

    Note: The 34,000 Ca II K solar images mean a historic, 100-year-old archive of solar photographs from India’s Kodaikanal Solar Observatory that scientists recently digitized and used to solve mysteries about the Sun’s 11-year magnetic cycle.

    What are Supergranulations?

    • Large-scale convection patterns on the Sun’s surface.
    • Form network-like structures on the solar surface.

    Features

    • Average lifetime: Around 24 hours.
    • Average size: About 30,000 km.
    • Cooler intergranular lane width: Around 6,000 km.

    Note: An intergranular lane is the darker, cooler region found between bright granules (bright cellular structures visible on the Sun’s surface) on the Sun’s surface.

    Major Findings

    Correlation with Solar Cycle

    • Lane widths and intensities strongly correlate with Sunspot activity.

    Latitude Dependence

    • Strongest correlations observed around ±11° to ±22° latitudes.
    • Peak lane-width correlation 18°N and 20°S.
    • Peak intensity correlation 13°N and 14°S.

    Time Lag

    • Lane width correlations peak:
      • During solar maximum.
    • Intensity correlations peak:
      • 1.25 to 1.5 years after solar maximum.
    • Lag varies with latitude:
      • Near zero around ±20°.
      • Increases toward equator.

    Significance of Study

    • Helps understand:
      • Solar dynamics
      • Magnetic flux transport
      • Solar irradiance variations.
    • Important for:
      • Future solar cycle prediction.
      • Understanding UV radiation changes from the Sun.
    • Confirms:
      • Supergranular properties are influenced by solar magnetic activity.

    About Kodaikanal Solar Observatory

    • Located in: Kodaikanal.
    • Known for: One of the world’s longest continuous solar observation datasets.
    • Operated by: Indian Institute of Astrophysics.

    About Solar Cycle

    • The Sun undergoes an approximately: 11-year cycle of magnetic activity.
    • Characterized by variation in:
      • Sunspots
      • Solar flares
      • Solar radiation.
    • Solar maximum: Period of highest solar activity.
    • Solar minimum: Period of lowest solar activity.

    [2022] If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?:
    1. GPS and navigation systems could fail.
    2. Tsunamis could occur at equatorial regions.
    3. Power grids could be damaged.
    4. Intense auroras could occur over much of the Earth.
    5. Forest fires could take place over much of the planet.
    6. Orbits of the satellites could be disturbed
    7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted.
    Select the correct answer using the code given below;

    [A] 1, 2, 4 and 5 only

    [B] 2, 3, 5, 6 and 7 only

    [C] 1, 3, 4, 6 and 7 only

    [D] 1, 2, 3, 4, 5, 6 and

  • India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier

    India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier ?

  • In the context of space technology, what is Bhuvan, recently in the news

    In the context of space technology, what is Bhuvan, recently in the news ?

  • Consider the following statements : The Satellite Oceansat-2 launched by India helps in

    Consider the following statements : The Satellite Oceansat-2 launched by India helps in
    1. estimating the water vapour content in the atmosphere.
    2. predicting the onset of monsoons.
    3. monitoring the pollution of coastal waters.
    Which of the statements given above is/are correct ?

  • Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when

    Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
    1. The orbit is geosynchronous.
    2. The orbit is circular.
    3. The orbit lies in the plane of the earth’s equator.
    4. The orbit is at an altitude of 22,236 km.

  • In which of the following activities are Indian Remote Sensing (IRS) satellites used

    In which of the following activities are Indian Remote Sensing (IRS) satellites used?
    (1) Assessment of crop productivity
    (2) Locating ground water resources
    (3) Mineral exploration
    (4) Telecommunications
    (5) Traffic studies
    Select the correct answer using the code given below.

  • With reference to ‘Astrosat’,’ the astronomical observatory launched by India, which of the

    With reference to ‘Astrosat’,’ the astronomical observatory launched by India, which of the
    following statements is/are correct?
    1. Other than USA and Russia, India is the only country to have launched a similar observatory
    into space.
    2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.
    Select the correct answer using the code given below.