There are lots of Astronomers,who have great contribution to explore Space,starts with Hipparchus to Albert Einsteine. They studies the objects in the sky,including planets, galaxies, black holes, and Stars.
There are lots of Astronomers,who have great contribution to explore Space,starts with Hipparchus to Albert Einsteine. They studies the objects in the sky,including planets, galaxies, black holes, and Stars.