[20] On 1 October 2024, ISRO announced the launch date to be 29 March 2028, with a journey of 112 days, thereby reaching the Venusian orbit on 19 July 2028.

[26][27] From 2016 to 2017, ISRO collaborated with Japan Aerospace Exploration Agency (JAXA) to study the Venus atmosphere using signals from the Akatsuki in a radio occultation experiment.

[31][32] ISRO and the French National Centre for Space Studies (CNES) held collaboration discussions in 2018, including the Venus mission and autonomous navigation and aerobraking technologies.

[33] French astrophysicist Jacques Blamont expressed interest to ISRO chairman Udupi Ramachandra Rao to use balloons to help study the Venusian atmosphere.

Similar to the Vega missions, these instrumented balloons could be deployed from an orbiter and take prolonged observations while floating in the planet's relatively mild upper atmosphere.

[25][34] ISRO agreed to consider the proposal to use a balloon probe carrying a 10 kilograms (22 lb) payload to study the Venusian atmosphere at a 55 kilometres (34 mi) altitude.

Understanding the fundamental processes that have transformed Venus—which is thought to have once been habitable and very comparable to Earth—will be crucial to comprehending the development of Earth and Venus, the sister planets.