Background:
Aryabhata was a prominent Indian mathematician and astronomer who lived during the 5th century. He made significant contributions to the fields of mathematics and astronomy.

Astronomer and Mathematician:
- Aryabhata is best known for his work in astronomy and mathematics. He is credited with introducing the concept of zero to the world.
- In astronomy, Aryabhata developed a model that explained the motion of celestial bodies, including the sun and the moon.
- He also accurately calculated the length of a year and the timing of eclipses, showing his prowess in observational astronomy.

Mathematical Contributions:
- Aryabhata's mathematical work included advancements in algebra, trigonometry, and arithmetic.
- He wrote the Aryabhatiya, a mathematical and astronomical treatise that covered various topics such as algebra, trigonometry, and spherical geometry.
- Aryabhata's work laid the foundation for future developments in mathematics and astronomy in India and beyond.

Legacy:
- Aryabhata's contributions to astronomy and mathematics had a lasting impact on the field. His work influenced later scholars and helped shape the way we understand the universe today.
- He is considered one of the greatest mathematicians and astronomers of ancient India, and his work continues to be studied and admired by scholars around the world.

Aryabhatta was both astronomer and mathematician.

Aryabhatta wrote a book called Aryabhatiyam which talks about the astronomy about the rotation of earth, eclipse of moon, stars and constellation, etc.

in mathematics, Aryabhatta invented the number 0 and have it's meaning 'no value'. Aryabhatta also gave birth to new numbers like 10,20,30,40 and other numbers bigger than single digit.

Therefore, Aryabhatta was a Astronomer and Mathematician.