apr 14, 628 - Indian astronomer Brahmagupta
Description:
a follower of the heliocentric theory of the Solar System earlier developed by Aryabhata, recognizes gravity as a force of attraction in his "The Opening of the Universe" of 628, in which he describes a force of attraction between the Sun and the Earth.Added to timeline:
Date:
apr 14, 628
Now
~ 1397 years ago
