Gaganyaan-4

Gaganyaan-4 (from Sanskrit: gagana, "celestial" and yāna, "craft, vehicle") will be the first crewed test flight of the Gaganyaan programme, with launch planned for 2025.

Mission
The mission is planned to demonstrate human spaceflight capability by sending a crew to an orbit of 400km of altitude for 7 days. Reporting in January 2020 for the Hindustan Times, Anonna Dutt quotes K. Sivan, then chairman of ISRO, as saying,"We are designing the mission for three people to go to low earth orbit for seven days. However, whether we send two people or one person and whether they spend seven days in the orbit or one will be decided [after the] unmanned flights." On October 2023, it was announced that the first crewed flight would take place after three uncrewed missions of the human-rated HLVM3. The launch is planned for 2025 with the capsule coming down in the Indian Ocean.

Crew
The Gaganyan programme astronauts, Prasanth Nair, Angad Pratap, Ajit Krishnan and Shubhanshu Shukla, were announced on 27 February 2024. Those selected for the first spaceflight will be from this pool of qualified astronauts, and one of them will fly to the ISS in 2024. Is considered that one or two crewmembers will take part of this mission.

International collaboration
ISRO, the Department of Space and the Indian National Space Promotion and Authorization Center (IN-SPACe), together with Voyager Space, agreed to a memorandum of understanding to explore use of Gaganyaan for crew transportation to Voyager's planned Starlab space station.

Gaganyaan-5
Gaganyaan-5 (from Sanskrit: gagana, "celestial" and yāna, "craft, vehicle") will be the second crewed test flight of the Gaganyaan programme, with launch planned in 2025.