Which of the following are the International space protection systems?
1. IADC: Coordinates global space debris management.
2. CSO: 10-country partnership for responsible space behaviour.
3. NMA: Tests NavIC authentication to prevent spoofing.
4. COPUOS: 2019 guidelines for space sustainability and debris mitigation.

In 2025, ISRO carried out a successful deployment sequence test of its parachute system. This test was conducted for which upcoming Indian human spaceflight mission?

In May 2025, shortly after the launch of PSLV-C61 (EOS-09) from Sriharikota, a fault was reported in its:

Examine the following statements about the SSLV-D2 mission and select the correct option:
Statement 1: SSLV-D2 inserted EOS-07, Janus-1, and AzaadiSAT-2 into a 450 km circular orbit utilizing a three-stage vehicle powered entirely by liquid propulsion.
Statement 2: The SSLV-D2 mission showcased rapid deployment capability with low turnaround time and limited ground infrastructure needs.

What specific physical quantity ensures a satellite maintains its orbit without continuous propulsion?

Assertion (A): The Polar Satellite Launch Vehicle (PSLV) is widely recognized as the workhorse launch vehicle of ISRO.
Reason (R): PSLV is highly versatile, capable of launching diverse payloads into various Earth orbits with a high success rate.**

What is the nickname of the world's largest radio telescope, built in China?

What name has been given to India’s next spacecraft to the Moon in the near future?