Note4Students

From UPSC perspective, the following things are important :

Prelims level: Shukrayaan I

Mains level: Not Much

venus

ISRO said that it is yet to receive approval from the Indian government for the Venus mission and that the mission could as a result be postponed to 2031.

Shukrayaan I: Venus Orbiter Mission

Shukrayaan-I is a planned orbiter to Venus by the Indian Space Research Organisation (ISRO) to study the surface and atmosphere of Venus.
The idea was born in 2012; five years later, ISRO commenced preliminary studies after the Department of Space received a 23% hike in the 2017-2018 budget.
The orbiter, depending on its final configuration, would have a science payload capability of approximately 100 kilograms (220 lb) with 500 W available power.
The launch will involve GSLV Mark II.

Expected launch

ISRO had originally hoped to launch Shukrayaan I in mid-2023 but cited the pandemic when it pushed the date to December 2024.
Optimal launch windows from Earth to Venus occur once around every 19 months.
This is why ISRO has ‘backup’ launch dates in 2026 and 2028 should it miss the 2024 opportunity.
But even more optimal windows, which further reduce the amount of fuel required at liftoff, come around every eight years.