P. Sreekumar, Satish Dhawan Professor at the Indian Space Research Organisation (ISRO) and advisor to its space science programme, stated that ISRO failed to obtain formal approval and funding from the government to send for the Venus mission, and that the mission may be postponed to 2031 as a result.
Optimal launch windows from Earth to Venus occur once every 19 months; backup dates were 2026 and 2028 if the 2024 window was missed, but the 2031 window is currently very good.
Shukrayaan I going to be an orbiter mission. It currently has a high-resolution synthetic aperture radar and a ground-penetrating radar as scientific payloads. From an elliptical orbit, the mission is expected to study Venus’s geological and volcanic activity, emissions on the ground, wind speed, cloud cover, and other planetary characteristics.