ISRO is the nodal agency of the Government of India responsible for space exploration and the development of space technologies.

Mangalyaan, also known as the Mars Orbiter Mission, was India's first mission to Mars, launched in 2013.

Dr. K. Radhakrishnan was the Chairman of ISRO during the Mars Orbiter Mission and played a crucial role in its success.

The primary objective of the Mars Orbiter Mission was to study the Martian atmosphere and climate, including its composition, temperature, and circulation patterns.

Chandrayaan-1 was India's first lunar mission, which successfully entered lunar orbit in 2008 and carried out various scientific experiments.

The primary objective of the Chandrayaan-1 mission was to map the surface of the Moon in detail and study its composition and mineralogy.

The Venus Orbiter Mission, also known as Shukrayaan-1, is India's first mission to Venus, launched in 2017.

The primary objective of the Venus Orbiter Mission is to study the Venusian atmosphere and climate, including its composition, temperature, and circulation patterns.

AstroSat is India's first dedicated space telescope, launched in 2015, designed to study exoplanets, stellar evolution, and other celestial objects.

The primary objective of the AstroSat mission is to study the evolution of stars, including their formation, structure, and behavior.

Dr. K. Radhakrishnan was the Chairman of ISRO during the AstroSat mission and played a crucial role in its success.

Aditya-L1 is India's planned mission to study the Sun, scheduled for launch in 2023.

The primary objective of the Aditya-L1 mission is to study the solar atmosphere and climate, including its composition, temperature, and dynamics.

The Jupiter Orbiter Mission is India's planned mission to study the outer planets of our solar system, including Jupiter, its moons, and its rings.

The primary objective of the Jupiter Orbiter Mission is to study the Jovian atmosphere and climate, including its composition, temperature, and circulation patterns.