Early proposals In 2019, ISRO chief
K. Sivan presented the features of the proposed space station for the first time, saying that the space station may weigh up to 20 tons. Three years later, in his New Year's speech delivered before retiring as chairman, Sivan stated that India's first crewed spaceflight project
Gaganyaan had completed the design phase and entered into the testing phase, hinting that the organization has achieved a breakthrough in reaching the space mission milestone. In 2023, chief
S. Somanath said: "Our Gaganyaan programme is towards a human space flight capability to space and once that happens, we will be able to look at space station building in subsequent modules. The timeline for this space station project spans the next 20 to 25 years. We will be definitely looking at manned exploration, a human spaceflight for a longer duration, space exercise there in our agenda". Following on from the Gaganyaan project, completing the station and conducting a crewed Moon landing by the year 2040 has been set as ISRO's goal for the upcoming decade, with a whole host of new projects and undertakings to come up in support of the mission. During his visit to India in November 2023,
NASA administrator Bill Nelson expressed NASA's readiness to support India's goal of building a commercial space station by 2040 if India seeks such collaboration. This potential partnership could leverage the expertise and experience of both countries, fostering innovation and advancing human presence in space between the two
Artemis Accords signatories. In December 2023, Somanath stated that ISRO had a 25-year roadmap extending to the year 2047. This included plans to launch the first space station module in 2028 and complete the station by 2035.
Cabinet approval Expanding the scope of the Gaganyaan initiative, the
Union Cabinet, led by
Prime Minister Narendra Modi, approved on 18 September 2024, the development of the Bharatiya Antariksh Station's initial module, BAS-1. The launch of the BAS-1 unit is one of the eight missions that are now part of the redesigned Gaganyaan program, which is scheduled for completion by December 2028. Hardware requirements and more unmanned flights are part of this expansion, which is meant to supplement the continuing human spaceflight programs. The Gaganyaan initiative has received an extra in financing to support its expanded scope, bringing the total budget to . With four missions under the ongoing Gaganyaan program scheduled by 2026, the development of the BAS-1 module and four additional missions for technology demonstration and validation by 2028, the program aims to develop and demonstrate critical technologies for long-duration human space missions.
Development The chairman of ISRO, S. Somanath revealed that he had been reviewing the designs of the Indian Space Station when speaking with media during the
India International Science Festival 2024. Developmental tests for the space station could begin from 2025. ISRO is planning to establish a basic, preliminary model of the space station in 2028 before building the larger, final version in 2035. The space agency is in discussions with industry to produce, evaluate, and introduce the first module by 2028. In addition to offering insights into India's
Space Vision 2047, S. Somanath on 26 October 2024, presented the idea of Bharatiya Antariksha Station serving as a base for lunar exploration on
Sardar Patel Memorial Lecture. According to
Jitendra Singh Rana, India's Minister of State for
Science & Technology and
Earth Science,
SpaDeX's achievement represents a significant step forward in the establishment of Bharatiya Antariksh Station. According to ISRO Chairman S. Somanath, the Indian Space Station is in the final stages of design as of February 2024. The electronics for the station will be produced at the
U. R. Rao Satellite Centre (URSC) in
Bengaluru, while the
Vikram Sarabhai Space Centre (VSSC) will help in hardware development.In June 2024, S. Somanath informed
NDTV about the completion of detailed design work for the space station's Phase-1 module, which is scheduled to launch on
LVM3 in 2028. The complete project and cost estimate report is ready for government approval. The module will initially accommodate robotic operations. Human activity will start in 2035.On 9 October 2024, it was announced that the station will have a five-module configuration, consisting of the base, core, science, lab and common working modules. All modules will have individual solar panels except for the Common Working Module. == Design ==