Gaganyaan Mission

At the core of ISRO's Gaganyaan program is the Human Spaceflight Centre, or HSFC. To accomplish the mission's objectives, it integrates work across multiple ISRO centers, research labs, universities, and companies. Reliability and human safety are given top priority by HSFC, the premier hub for human spaceflight, when it comes to investigating novel technologies such as crew training, human factors engineering, and life support systems. Future human spaceflight operations, such as rendezvous and docking, space station construction, and cooperative trips to the Moon, Mars, and asteroids, depend on these developments.

The Gaganyaan project intends to demonstrate India's capability to launch a three-person crew into space, allowing them to spend three days orbiting 400 km above Earth and return safely to land in the Indian Ocean. International technology are combined with the expertise of ISRO, Indian industry, academia, and research organizations in this project.
Important technologies are being developed, such as a crew management system for training and recovery, an emergency escape plan, a life support system for a comfortable space environment, and a safe launch vehicle for astronauts.
In order to show that technology is ready, there are missions that take place before actual human spaceflight. Test Vehicle (TV) flights, Integrated Air Drop Tests (IADT), and Pad Abort Tests (PAT) are some of these operations. Unmanned vehicles will demonstrate safety and dependability.

Prime Minister Narendra Modi has announced the names of astronauts going for Gaganyaan mission

The identities of the four astronauts who will be a part of India's space mission, named Gaganyaan by the Indian Space Research Organization (ISRO), were revealed by Prime Minister Narendra Modi on Tuesday. This mission, which will be India's first manned space mission, will send four astronauts into low-Earth orbit. The statement was given by the prime minister as he was meeting with scientists, including representatives of the Vikram Sarabhai Space Centre in Thiruvananthapuram, Kerala.

The astronauts selected for India's first crewed space trip are Shubanshu Shukla, Angad Prathap, Ajit Krishnan, and Prashanth Balakrishnan Nair. Having served as test pilots for a considerable amount of time, they are all highly experienced wing commanders or group captains in the Indian Air Force (IAF) and are therefore well-equipped to deal with unforeseen circumstances.

The space agency's Bengaluru base is where these astronauts have been receiving their training. The Institute of Aerospace Medicine of the IAF hosted the selection procedure. 

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A collaboration agreement was reached in June 2019 between ISRO and Glavkosmos, a division of Roscosmos, the Russian space agency. A contract to train four astronauts was signed by them. For their training, these astronauts traveled to Russia's Yuri Gagarin Cosmonaut Training Centre in February and March of 2021.

In 2023, Bill Nelson, the director of NASA, declared in Delhi that the American space agency will prepare an Indian astronaut for a voyage to the International Space Station by the end of 2024. The Indian Express claimed that the choice is anticipated to come from the four people getting ready for the Gaganyaan expedition.

The Gaganyaan mission intends to demonstrate India's capability to launch people on a three-day journey 400 kilometers above Earth. After that, the astronauts will safely return to Earth and touch down in the Indian Ocean.