Question 301
What is significant about the CMS-03 satellite launch by Indian Space Research Organisation in November 2025?
- AOption (a)
It is the heaviest communication satellite launched by India.
- BOption (b)
It is the first private payload launched from India.
- COption (c)
It is the first navigation satellite mission from India.
- DOption (d)
It is India’s first Mars mission satellite.
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Correct answer
It is the heaviest communication satellite launched by India.
Why this answer is correct
The correct answer is It is the heaviest communication satellite launched by India..
Key Points
- The CMS-03 is a state-of-the-art communication satellite designed and developed by the Indian Space Research Organisation (ISRO) to provide advanced telecommunication services.
- Scheduled for launch in November 2025, the CMS-03 mission is significant because it is the heaviest communication satellite to be launched by India’s own launch vehicle, the LVM3 (Launch Vehicle Mark 3). Hence, statement 1 is correct.
- This satellite is part of the CMS series, which is the successor to the long-running GSAT series. It is equipped with high-power Ka-band and Ku-band transponders to enhance data connectivity and VSAT services.
- The mission aims to achieve a lift-off mass exceeding previous indigenous records, pushing the payload capabilities of the LVM3 rocket to its maximum potential for Geosynchronous Transfer Orbit (GTO) missions.
- The CMS-03 is intended to provide expanded coverage for the Indian mainland as well as the Andaman & Nicobar and Lakshadweep islands, supporting the Digital India vision for high-speed internet.
Additional Information
- Private Space Payloads: The first private payload launched from India was the Vikram-S sub-orbital rocket, developed by the startup Skyroot Aerospace under the Prarambh mission on November 18, 2022. Hence, statement 2 is incorrect.
- Navigation Satellites: India's first dedicated navigation satellite mission was the IRNSS-1A, which was launched on July 1, 2013, forming the basis of the NavIC (Navigation with Indian Constellation) system. Hence, statement 3 is incorrect.
- Mars Missions: India’s first Mars mission, the Mars Orbiter Mission (MOM) or Mangalyaan, was launched on November 5, 2013, using the PSLV-C25 rocket. It made ISRO the fourth space agency in the world to reach Mars. Hence, statement 4 is incorrect.
- LVM3 Launch Vehicle: Formerly known as GSLV Mk III, the LVM3 is a three-stage heavy-lift launch vehicle. It consists of two S200 solid rocket boosters, an L110 liquid core stage, and a C25 cryogenic upper stage, capable of carrying payloads up to 4,000 kg to GTO.
Important Points
- Frequency Bands: The use of Ka-band in CMS-03 allows for higher bandwidth and smaller ground station antennas compared to traditional C-band or Ku-band satellites.
- Self-Reliance: By launching such heavy satellites indigenously, India reduces its dependence on foreign agencies like the European Space Agency (ESA) or SpaceX for launching high-mass communication payloads.
- Operational Life: Like most ISRO communication satellites in Geostationary Orbit, the CMS-03 is expected to have a mission life of over 10 to 12 years, providing continuous service for broadcasting and secure government communications.