Name the Book Written by Aryabhata.

Answer: Aryabhata wrote the book Aryabhatiya. It is written in the Sanskrit language. The book was written in 499 AD. 

The book Aryabhatiya mentions the theories of astronomy and mathematics involved in the spinning of the earth and the periods of the planet counted through the sun. Aryabhata proposed that the planets and the moon shine because of the reflection from the sunlight. 

In his book, Aryabhata explains the causes of solar and lunar eclipses. Aryabhatiya was translated into Latin in the 13th century, helping the Europeans understand the maths behind the calculation of triangles, cubes and square roots.