Question 1

Axiom-4 was an entirely ISRO-led indigenous mission.

Accepted Answer

It was a commercial mission managed by Axiom Space using a SpaceX Crew Dragon, with ISRO participating through a multilateral agreement facilitated by NASA.

Question 2

Shubhanshu Shukla is the first Indian citizen to go to space.

Accepted Answer

Wing Commander Rakesh Sharma was the first Indian citizen in space in 1984. Shukla is the first Indian to visit the ISS and the first of the Gaganyaan cohort to fly.

Question 3

Consider the following statements regarding the Axiom-4 (Ax-4) mission:
1. The mission utilized ISRO's LVM3 launch vehicle to transport the crew to the International Space Station.
2. Group Captain Shubhanshu Shukla served as the Mission Commander for the Axiom-4 flight.
3. The Space Flight Agreement for this mission was signed directly between ISRO's Human Space Flight Centre (HSFC) and Axiom Space.
How many of the above statements are correct?

Accepted Answer

(a) Only one — Statement 1 is incorrect because the mission used a SpaceX Falcon 9 rocket and Crew Dragon capsule, not ISRO's LVM3. Statement 2 is incorrect as Shukla was the Mission Pilot; veteran NASA astronaut Peggy Whitson served as the Mission Commander. Statement 3 is correct; ISRO's HSFC signed the agreement with commercial entity Axiom Space following the US-India joint initiative.

Question 4

Match List I (Astronaut/Entity) with List II (Role/Status in human spaceflight) regarding India's space endeavors:
List I
A. Rakesh Sharma
B. Shubhanshu Shukla
C. Axiom Space
D. SpaceX

List II
1. First Indian on the International Space Station
2. First Indian citizen in space
3. Operator of the launch vehicle and spacecraft for Ax-4
4. Manager and integrator of the private astronaut mission

Accepted Answer

(a) A-2, B-1, C-4, D-3 — Rakesh Sharma (A) was the first Indian in space (2) aboard the Soviet Salyut 7 in 1984. Shubhanshu Shukla (B) is the first Indian on the ISS (1). Axiom Space (C) is the commercial company that organized and managed the private mission (4). SpaceX (D) is the launch provider operating the Falcon 9 rocket and Crew Dragon capsule (3).

Question 5

Assertion (A): Astronauts on board the ISS during the Axiom-4 mission experience a state of weightlessness because the gravitational force of the Earth is zero at that altitude.
Reason (R): The ISS is in a state of continuous free-fall towards the Earth, but its horizontal orbital velocity keeps it matching the curvature of the Earth.
Select the correct answer from the codes given below:

Accepted Answer

(d) A is false but R is true — Assertion (A) is false because the gravitational force at the ISS altitude (around 400 km) is still about 90% as strong as it is on the Earth's surface; gravity is definitely not zero. Reason (R) is true; weightlessness (microgravity) occurs because the station and the astronauts are in a continuous state of free-fall (orbit), meaning there is no normal force acting on them.

Launch of Axiom-4 Mission with Indian Astronaut

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