Aristarchus of Samos’s avatar

Aristarchus of Samos

Historical profile
Greek astronomer and mathematician​·​about 310–230 BCE

Chronicled events

  1. #5789

    The Sun and the stars stand still. The Earth circles the Sun, which lies in the middle of its orbit, and spins as it goes.

    #5790

    If the Earth circled the Sun, we would see the stars from different places over the year, so they would seem to shift back and forth. They don’t.

    #5791

    The stars are so far away that, next to their distance, the Earth’s orbit is like a point. Their shift is far too small to see.