Aryabhata is widely regarded as the father of Indian astronomy due to his significant contributions to the field, including the development of the heliocentric model of the solar system.

Aryabhata was the first Indian astronomer to propose the idea of a spherical Earth rotating on its axis, which was a revolutionary concept at the time.

Jantar Mantar is an ancient Indian astronomical observatory located in Delhi, India. It was constructed by Maharaja Jai Singh II in the early 18th century and consists of a collection of architectural structures designed for astronomical observations.

The Indian Space Research Organisation (ISRO) is the national space agency of India, responsible for the country's space exploration program.

Aryabhata was India's first artificial satellite, launched in 1975. It was named after the ancient Indian astronomer Aryabhata.

Rakesh Sharma was the first Indian astronaut to travel to space, aboard the Soviet spacecraft Soyuz T-11 in 1984.

Chandrayaan-1 was India's first lunar mission, launched in 2008. It successfully orbited the Moon and conducted various scientific experiments.

Mangalyaan was India's first space probe sent to Mars, launched in 2013. It successfully entered Mars' orbit and conducted various scientific experiments.

Gaganyaan is India's first human spaceflight mission, scheduled to launch in 2023. It aims to send three Indian astronauts to space for a period of seven days.

Bhaskara II developed the theory of planetary motion known as the 'mean motion theory', which provided a more accurate method for calculating the positions of planets.

Surya Siddhanta is an ancient Indian astronomical text that contains detailed descriptions of astronomical phenomena, including the motions of planets, eclipses, and the positions of stars.

Brahmagupta developed the 'sine table' and 'cosine table', which were essential for trigonometric calculations and played a significant role in the advancement of mathematics and astronomy.

The X-ray Polarimeter Satellite (XPoSat) is an Indian space telescope that is being developed to study the universe in infrared wavelengths and is expected to provide valuable insights into the formation and evolution of galaxies and other cosmic structures.

Aryabhata developed the 'Aryabhatiya', a seminal work that laid the foundation for Indian astronomy and mathematics. It covered various topics, including astronomy, mathematics, and astrology, and had a profound impact on the development of these fields.