View in App Shukla, alongside astronauts Peggy Whitson (USA), Slawosz Uznanski-Wisniewski (Poland), and Tibor Kapu (Hungary), boarded SpaceX's Dragon spacecraft “Grace” at 3:30 am CT (2 PM IST) on Monday. Image:X/ Axiom Space New Delhi, ZeeBiz WebDesk Group Captain Shubhanshu Shukla, the first Indian to reach the International Space Station (ISS), is set to return to Earth on Tuesday, marking the end of a historic mission under Axiom Space's Ax-4 program. After spending 18 remarkable days aboard the orbital lab, Shukla and his three international crewmates are scheduled to splash down in the Pacific Ocean off the coast of California at 3:01 pm IST (4:31 am CT). Undocking and return journey aboard Dragon ‘Grace’ Shukla, alongside astronauts Peggy Whitson (USA), Slawosz Uznanski-Wisniewski (Poland), and Tibor Kapu (Hungary), boarded SpaceX's Dragon spacecraft “Grace” at 3:30 am CT (2 PM IST) on Monday. The spacecraft undocked from the ISS’s Harmony module at 7:15 am ET (4:45 pm IST).