Chandrayaan-1, launched in 2008, was India's first lunar mission and successfully entered lunar orbit in November 2008.

Chandrayaan-1's main goal was to study the lunar surface mineralogy and composition, as well as to search for water ice in the polar regions.

Vikram Sarabhai is widely regarded as the 'Father of Indian Space Science' for his pioneering contributions to the establishment of the Indian Space Research Organization (ISRO) and the development of India's space program.

Pragyan was the name of India's first lunar rover, which was part of the Chandrayaan-2 mission. It was designed to explore the lunar surface and conduct scientific experiments.

Aryabhata, an ancient Indian astronomer and mathematician, proposed the idea of a heliocentric solar system in the 5th century CE, where the Earth and other planets revolve around the Sun.

In Hindu mythology, the lunar eclipse is associated with the legend of the churning of the ocean of milk, where the gods and demons worked together to obtain the elixir of immortality.

Karwa Chauth is a Hindu festival celebrated by married women on the full moon day in the month of Kartik, where they observe a fast for the well-being and longevity of their husbands.

India's Chandrayaan-2 mission attempted to land on the lunar crater Manzinus C, located in the southern hemisphere of the Moon.

The Indian Space Research Organization (ISRO) is the national space agency of India and is responsible for the country's lunar exploration program, including missions like Chandrayaan-1 and Chandrayaan-2.

Chandrayaan-3 is the planned lunar mission by ISRO, which aims to explore the lunar poles and study the lunar surface, mineralogy, and composition.

Vikram Sarabhai was the first Indian scientist to propose the idea of using artificial satellites for communication, which laid the foundation for India's satellite communication program.

Chandrayaan-4 is the planned Indian lunar mission aimed at studying the lunar surface, searching for water ice, and exploring the lunar poles.

Tycho Brahe, a Danish astronomer, developed the 'Tychonic system,' which was a geocentric model of the solar system that placed the Earth at the center and the Sun and Moon orbiting around it.

Chandrayaan-6 is the planned Indian lunar mission aimed at establishing a permanent lunar base, conducting scientific experiments, and exploring the lunar surface.

Varahamihira, an ancient Indian astronomer and mathematician, made significant contributions to the study of lunar eclipses and developed the 'lunar theory,' which provided a mathematical explanation for the occurrence and duration of lunar eclipses.