The Rigveda, one of the four Vedas, contains hymns and verses that are interpreted to provide astrological insights.

Indian astrology encompasses various aspects, including predicting the future, understanding planetary influences, and determining auspicious times for events.

The sundial, an instrument for measuring time based on the position of the sun, was invented in ancient India and is still used today.

Aryabhata, a renowned mathematician and astronomer, is regarded as the father of Indian astronomy for his significant contributions to the field.

Aryabhata proposed the heliocentric model of the solar system, where the Earth and other planets revolve around the Sun, centuries before Copernicus.

Aryabhata calculated the value of pi (π) to an accuracy of four decimal places, a significant achievement in ancient mathematics.

Navagrahas refers to the nine planets in Indian astrology: Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu, and Ketu.

Brahmagupta developed the concept of zero and the decimal system, revolutionizing mathematics and astronomy.

Rashi refers to the 12 zodiac signs in Indian astrology, which are based on the position of the Sun in the sky.

Brahmagupta proposed the theory of gravitation centuries before Newton, suggesting that objects fall to the Earth due to an attractive force.

Nakshatras refer to the 27 lunar mansions in Indian astrology, which are used to determine the position of the Moon in the sky.

Aryabhata developed the concept of the Earth's rotation on its axis, a significant contribution to astronomy.

Lagna refers to the ascendant or rising sign in Indian astrology, which is determined by the position of the zodiac sign on the eastern horizon at the time of birth.

Brahmagupta developed the concept of the precession of the equinoxes, which is the gradual shift in the position of the equinoxes over time.

Dasha refers to the system of planetary periods and sub-periods in Indian astrology, which is used to determine the influence of planets on an individual's life.