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The Ganitadhyaya and Goladhyaya of his work Siddhanta Shiromani are devoted to astronomy.<ref name=":3" /> It deals with distance of planets, solar eclipse, lunar eclipse, phases of moon etc. and other essential knowledge of ancient Indian astronomy. He also writes about space, movement of planets, phases and its calculation etc in this book.<ref name=":0" /> In fact, his book Siddhanta Shiromani surpassed all the ancient books of astronomy in India.<ref name=":3" />  

The Ganitadhyaya and Goladhyaya of his work Siddhanta Shiromani are devoted to astronomy.<ref name=":3" /> It deals with distance of planets, solar eclipse, lunar eclipse, phases of moon etc. and other essential knowledge of ancient Indian astronomy. He also writes about space, movement of planets, phases and its calculation etc in this book.<ref name=":0" /> In fact, his book Siddhanta Shiromani surpassed all the ancient books of astronomy in India.<ref name=":3" />  

=== Varah Mihir ===

=== वराहमिहिरः ॥ Varahamihira ===

He is also a famous astronomer from India. He lived around 5- 6 century. He was born in Avanti kingdom (now Madhya Pradesh). He studied in ujjain and started working here the two famous books written by h, are panch sidhantika and vrahat sanhita, these are five pats of panch sidhantika:

Born in Avanti region (roughly corresponding to the modern-day Malwa), Varahamihira was a famous astronomer from ancient India<ref name=":0" /> who lived through 505-587 CE. He is considered to be one of the nine jewels (Navaratnas) of the court of legendary ruler Yashodharman Vikramaditya of Malwa.<ref name=":3" />

1. surya sidhant

Varahamihira belonged to Ujjain and is famous for two of his works namely, Pancha Siddhantika and the Brhat Samhita. The Pancha Siddhantika is a treatise on the five astronomical canons. A work on mathematical astronomy, itn its five parts it summarises five earlier astronomical treatises namely,

His other work, the Brhat Samhita is encyclopedic in nature and within astronomy also covers wide range of topics like speed of planets, eclipse, rain etc.<ref name=":0" /><ref name=":3" />

 

 

 

The other book Vrahat sanhita is an encyclopedia. He has written about many subjects kike the speed of planets, eclipse, rain etc in this book.

== contributions in other field of science ==

== contributions in other field of science ==