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Home / IAS Preparation / Science & Technology Notes / Aditya-L1 ISRO Space Mission

Aditya-L1 ISRO Mission: Launch Date, Status & Objectives

Last Updated on Jun 30, 2025
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India’s space programme, led by the Indian Space Research Organisation (ISRO), has evolved from modest beginnings into one of the most respected space agencies in the world. Over the years, ISRO has designed and executed a range of missions—from satellite navigation, Earth observation, interplanetary exploration, to solar studies—that have not only enhanced India’s technological self-reliance but also contributed to global scientific collaboration. Its cost-effective approaches and mission diversity—from Chandrayaan and Mangalyaan to Aditya-L1 and the upcoming Gaganyaan—have become case studies in innovation.

For UPSC aspirants, ISROs journey is more than current affairs—it directly intersects with the syllabus of General Studies Paper 3 (Science & Technology), provides examples for GS Paper 2 (International Relations, Governance), and can enrich perspectives in the Essay Paper, Ethics, and even Optional subjects like Geography or PSIR. In this article, we will explore detailed insights about ISRO Aditya-L1 Mission —its objectives, timelines, key technologies, and strategic implications.

ISRO Aditya-L1 Mission Overview

ISRO launched Aditya-L1 to support objectives related to Scientific (Solar Observatory).Aditya-L1 was launched with the aim of conducting operations in Sun-Earth Lagrange Point 1 (L1).

  • Aditya-L1 lifted off using the PSLV-C57 (PSLV-XL).
  • The launch took place at Satish Dhawan Space Centre, Sriharikota.
  • Among its key functions, Aditya-L1 was intended to Study Sun's corona, chromosphere, photosphere, solar wind.
  • Aditya-L1 was further expected to aid in Understand solar eruptive phenomena, space weather drivers.
  • The mission’s progress is marked by the status Operational, reached L1 January 6, 2024.

Aditya-L1 Space Mission Overview for UPSC

Mission Name

Aditya-L1

Mission Abbreviation

Aditya-L1

Mission Type

Scientific (Solar Observatory)

Target Celestial Body or Orbit

Sun-Earth Lagrange Point 1 (L1)

Primary Objective

Study Sun's corona, chromosphere, photosphere, solar wind

Secondary Objectives

Understand solar eruptive phenomena, space weather drivers

Mission Status

Operational, reached L1 January 6, 2024

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Timeline & Milestones of ISRO Aditya-L1 Mission
  • ISRO conducted the launch of Aditya-L1 on September 2, 2023, as per mission planning.
  • The primary mission life of Aditya-L1 is projected to conclude around Approximately 5 years planned.

Timeline & Milestones

Proposal Date

N/A

Critical Design Review (CDR) Date

N/A

Assembly Complete Date

N/A

Launch Date

September 2, 2023

Landing / Flyby Date

N/A (Orbital mission)

End of Primary Mission Date

Approximately 5 years planned

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ISRO Aditya-L1 Mission Technical Specifications

The satellite’s technical blueprint included Spacecraft placed in halo orbit around L1, allowing for stability and performance in space.Aditya-L1 was placed into Halo orbit around L1 (15 million km from Earth), chosen to suit its Scientific (Solar Observatory) mission requirements.

  • ISRO selected VELC, SUIT, SoLEXS, HEL1OS, ASPEX, PAPA, MAG for Aditya-L1 based on their suitability for deployment in Sun-Earth Lagrange Point 1 (L1).
  • To support telemetry, tracking, and command operations, Aditya-L1 used S-band.
  • Technologies used in the mission included Solar observatory instruments, halo orbit insertion, supporting onboard operations and analysis.

Technical Specifications

Spacecraft Technical Specifications

Spacecraft placed in halo orbit around L1

Scientific Payloads

VELC, SUIT, SoLEXS, HEL1OS, ASPEX, PAPA, MAG

Orbit Details

Halo orbit around L1 (15 million km from Earth)

Communication Frequencies / Band

S-band

Key Technologies Used

Solar observatory instruments, halo orbit insertion

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Aditya-L1 Launch Information
  • Aditya-L1 was successfully launched on September 2, 2023 by ISRO.
  • To execute the launch of Aditya-L1, the PSLV-C57 (PSLV-XL) was deployed.
  • All pre-launch procedures were conducted at Satish Dhawan Space Centre, Sriharikota.

Launch Information

Launch Vehicle

PSLV-C57 (PSLV-XL)

Launch Site

Satish Dhawan Space Centre, Sriharikota

Who are the Stakeholders & Collaborators?

The mission involved contributions from ISRO, IIA, IUCAA, and other institutions.

  • Various Indian research institutions for payloads played a role in equipping the spacecraft with mission-relevant payloads.

Stakeholders & Collaboration

Agencies Involved

ISRO, IIA, IUCAA, and other institutions

Commercial Partners

N/A

International Partners

N/A

Payload Contributions by Partners

Various Indian research institutions for payloads

Data Sharing Policy

N/A

Outputs, Applications & Impact of ISRO Aditya-L1 Mission

Mission documentation identifies India's first dedicated solar observatory mission as a milestone in the Scientific (Solar Observatory) program.Among its contributions, Aditya-L1 delivered information on Solar imaging, solar wind data for space weather studies.

  • Scientific (Solar Observatory) missions like Aditya-L1 are significant as they Enhances global solar research efforts.
  • The mission’s outcome supports national needs through civilian applications like Space weather understanding, climate studies, radiation alerts.
  • One of the key policy-aligned outcomes of Aditya-L1 is India's first solar observatory, enhances global scientific standing.
  • With an eye on technological expansion and operational coverage, ISRO’s roadmap after Aditya-L1 includes proposals like Future advanced solar missions, deep space exploration.

Outputs, Applications & Impact of Aditya-L1 Mission

Data Outputs and Applications

Solar imaging, solar wind data for space weather studies

Major Achievements

India's first dedicated solar observatory mission

Applications in Civilian Life

Space weather understanding, climate studies, radiation alerts

Impact on Policy & Global Collaboration

Enhances global solar research efforts

Environmental Impact & Sustainability

N/A

Strategic Significance & Policy Alignment

India's first solar observatory, enhances global scientific standing

Follow-up Missions or Extensions

Future advanced solar missions, deep space exploration

Cost Estimate

N/A

ISRO Aditya-L1 Space Mission Risks, Failures & Mitigation

Operational phases of Aditya-L1 required attention to issues like Complex trajectory to L1, instrument calibration in space.

    Risks, Failures & Mitigation

    Challenges Faced

    Complex trajectory to L1, instrument calibration in space

    Risk Mitigation Measures

    N/A

    Failures or Anomalies

    N/A

    Corrective Actions Taken

    N/A

    Lessons Learned

    N/A

    UPSC Relevance of ISRO Aditya-L1 Space Mission
    • Understanding the basic structure of ISRO, its launch centres, and satellite series (such as GSAT, INSAT, or CARTOSAT) is crucial for tackling Prelims questions with precision.
    • Writing effective GS answers often involves citing ISRO’s missions as examples of indigenous technological advancement, innovation, and self-reliance under programs like ‘Make in India’ or ‘Atmanirbhar Bharat’.
    • ISRO’s space missions offer rich content for UPSC essays on themes like innovation, scientific temper, national self-reliance, or institutional excellence.
    • For Physics or Engineering-based optionals, ISRO’s propulsion systems, orbital mechanics, or sensor technologies offer real-world illustrations of core theories.

    Past UPSC Mains PYQs on ISRO Space Missions

    Q1. Discuss the role of the private sector in the growth of the space industry in India. How has the governments policy of 2023 affected it? (2023, GS Paper 3 - Science & Technology)

    Q2. What is India’s plan to have its own space station and how will it benefit our space programme? (2022 & 2019, GS Paper 3 - Science & Technology)

    Q3. Space has been the next big frontier for mankind after sea and land. In this context, discuss Indias policy and preparedness for space wars. (2019, GS Paper 3 - Science & Technology)

    Q4. Discuss the utility of the Mars Orbiter Mission (MOM) for India. (2016, GS Paper 3 - Science & Technology)

    Q5. What do you understand by Standard Positioning Systems and Precision Positioning Systems in the GPS era? Discuss the advantages India perceives from its ambitious IRNSS programme employing just seven satellites. (2015, GS Paper 3 - Science & Technology)

    Past UPSC Prelims PYQs on ISRO Space Missions

    Q1 [2025]: GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN?

    I. It is designed to provide additional accuracy and integrity.
    II. It will allow more uniform and high quality air traffic management.
    III. It will provide benefits only in aviation but not in other modes of transportation.

    Select the correct answer using the code given below.

    (a) I, II and III
    (b) II and III only
    (c) I only
    (d) I and II only

    Correct Answer: (d) I and II only

    Explanation: Statements I and II correctly describe the core purpose and benefit of the GAGAN system. (I) GAGAN is designed to augment GPS signals by correcting for errors, which provides much greater accuracy and guarantees the integrity (reliability) of the positioning information. (II) This enhanced accuracy and reliability directly enables more precise aircraft routing and landing procedures, thus improving the uniformity and quality of air traffic management.

    Q2 [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 7

    Answer: The correct answer is (c).

    Explanation: A major solar storm can disrupt GPS, power grids, satellite orbits, polar radio communication, and cause auroras, but cannot trigger tsunamis or forest fires.

    Q3 [2020]: The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to

    (a) Voyager-2
    (b) New horizons
    (c) Lisa Pathfinder
    (d) Evolved LISA

    Answer: The correct answer is (d) Evolved LISA.

    Explanation: Evolved LISA (Laser Interferometer Space Antenna) is a planned space-based gravitational wave observatory by ESA and NASA, using three spacecraft in a triangular formation with laser beams to detect cosmic gravitational waves.

    Q4 [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 statement(s) given above is/are correct?

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


    Answer: c) 1 and 3 only

    Explanation: Mangalyaan is the informal name of Mars Orbiter Mission (MOM), launched by ISRO on 5 November 2013 and India is the only nation to date to have succeeded on its maiden attempt.

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    UPSC Practice Questions on ISRO Space Missions

    Q1. Consider the following statements:
    A. Gaganyaan: ISRO plans a seven-day space tour with three gaganauts in 2023 for science and technology advancement.
    B. Vyommitra: A humanoid robot sent along with gaganauts to manage environmental information.
    Which of the above is/are correct?
    1. B only
    2. Neither A nor B
    3. A only
    4. Both A and B

    Answer: B only
    Solution: Vyommitra is a humanoid robot developed by ISRO intended to be sent to space, designed to manage environmental information. The statement about Gaganyaan planning a three-day space tour with three astronauts in 2023 is incorrect. Gaganyaan is indeed ISRO's manned space mission, which aims to send Indian astronauts to space. The inclusion of a humanoid robot like Vyommitra in space missions represents a significant technological advancement, demonstrating capabilities in robotics and space exploration. Humanoid robots in space missions can perform tasks that are risky or impossible for humans, and they can also be used to simulate human presence in space for research purposes.

    Q2. Which among the following is a recent scientific mission of ISRO for a comprehensive study of the Sun?
    1. Aditya - L1
    2. Bhaskara - L2
    3. Solar Mission - L1
    4. Solar Orbiter

    Answer: Option 1
    Solution: Aditya L1 is India's first scientific expedition to study the Sun. It will be ISRO's second space-based astronomy mission after AstroSat, which was launched in 2015. L1 refers to Lagrangian/Lagrange Point 1, one of five points in the orbital plane of the Earth-Sun system. ISRO categorizes Aditya L1 as a 400kg-class satellite that will be launched using the Polar Satellite Launch Vehicle in XL configuration. It will be inserted in a halo orbit around the L1 which is 1.5 million km from the Earth.

    Q3. In reference to Mangalyaan launched by ISRO, consider the following statements:
    I. It is also called the Mars Orbiter Mission.
    II. It was launched in November 2013.
    Select the correct answer using the code given below:
    1. Neither I nor II
    2. Both I and II
    3. Only I
    4. Only II

    Answer: option 2
    Solution: Mangalyaan is the popular name for India's Mars Orbiter Mission. The mission's official name is indeed Mars Orbiter Mission. Hence, Statement 1 is correct. Mangalyaan was launched on November 5, 2013. Hence, Statement 2 is correct.

    Q4. Mars Orbiter Mission is informally called:
    1. Mangalyaan
    2. Mission water
    3. Mystery Mars
    4. Magnetic Mangal

    Answer: Mangalyaan
    Solution: The Mars Orbiter Mission (MOM) is informally known as Mangalyaan, which means Mars Craft in Sanskrit. It was launched by the Indian Space Research Organisation on November 5, 2013. Mangalyaan is India's first interplanetary mission, and it made India the first Asian country to reach Martian orbit and the fourth space agency in the world to do so. The mission's primary objective was to develop the technologies required for interplanetary missions.

    Q5. Which of the following statements about Gaganyaan are true?
    A. LVM-3 rocket is the launch vehicle for the Gaganyaan mission.
    B. It consists of solid stage, liquid stage, and cryogenic stage.
    C. It has an Orbital Module which comprises of Crew Module and Service Module.
    D. It envisages demonstration of human space flight capabilities by launching a crew of 5 to the Earth's orbit at 500 kilometers.
    Choose the correct answer:
    1. A, B and C only
    2. B and C only
    3. A and B only
    4. B and D only

    Answer: A, B and C only
    Solution: LVM-3 rocket is the launch vehicle for the Gaganyaan mission. This is true and confirms statement A. It consists of solid stage, liquid stage, and cryogenic stage. This validates statement B as accurate. It has an Orbital Module which comprises of Crew Module and Service Module. This supports statement C as correct. Statement D is incorrect because Gaganyaan envisages a crew of 3, not 5, and the planned orbit is around 400 kilometers, not 500 kilometers.

    Q6. ISRO recently achieved its 100th launch from the Satish Dhawan Space Centre in Sriharikota. Choose the correct statement regarding this launch.
    1. Only statements 1, 2 and 3 are correct
    2. Only statements 2, 3 and 4 are correct
    3. Only statements 1 and 3 are correct
    4. Only statements 2 and 3 are correct

    Answer: Only statements 2 and 3 are correct
    Solution: ISRO achieved its 100th launch from Satish Dhawan Space Centre, Sriharikota, using the GSLV-F15 rocket. Hence statement 1 is incorrect. The mission successfully deployed the NVS-02 satellite, which is part of the second-generation NavIC constellation.

    Q7. Which of the following is not a satellite of Indian origin?
    1. XPoSat
    2. IXPE
    3. SROSS-C
    4. HySIS

    Answer: IXPE
    Solution: IXPE (Imaging X-ray Polarimetry Explorer) is not an Indian satellite. It is a NASA mission in collaboration with the Italian Space Agency. IXPE was launched on December 9, 2021, using a SpaceX Falcon 9 rocket. It is designed to study the polarization of X-rays from cosmic sources like black holes and neutron stars.

    Q8. Which space agency helps India in tracking the Solar Mission Aditya - L1?
    1. NASA
    2. ESA
    3. JAXA
    4. ROCOSMOS

    Answer: ESA
    Solution: ESA (European Space Agency) supports India in tracking the Solar Mission Aditya - L1. The Solar Mission Aditya - L1 is India's first dedicated mission to study the Sun. ESA provides tracking services through its deep space tracking network to assist ISRO in monitoring the spacecraft.

    Q9. ISRO successfully completed which type of mission in February 2025 with the second docking of satellites?
    1. Mars Orbiter Mission
    2. SpaDeX Mission
    3. Chandrayaan Mission
    4. Astrosat Mission

    Answer: SpaDeX Mission
    Solution: The second docking of satellites under ISRO's Space Docking Experiment - SpaDeX Mission was accomplished successfully in February 2025.

    Q10. In which district of Andhra Pradesh is ISRO Satish Dhawan Space Centre located?
    1. Guntur
    2. Chittoor
    3. Nellore
    4. Anantpur

    Answer: Nellore
    Solution: ISRO's Satish Dhawan Space Centre is located in Sriharikota, a barrier island in the Nellore district of Andhra Pradesh, India. Sriharikota serves as the primary launch site for India's satellite launch vehicles, including the PSLV, GSLV, and Gaganyaan missions.

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