Astronomers

Ancient astronomers did not have instruments to help them see objects in the sky.

Ancient astronomers noticed constellations and gave them names.

Many astronomers assume that the universe expands infinitely.

Many astronomers assume that the universe continues to expand forever.

During the Middle Ages, astronomers had clung to the theory of a Greek philosopher.

Astronomers inferred the existence of a local supercluster.

Acting on advice from his astronomers, Alexander the Great decided not to attack Egypt and went to India instead.

Before astronomers had telescopes, they could only use quadrants to map objects in the sky.

Interestingly, according to modern astronomers, space is finite. This is a very comforting thought — particularly for people who can never remember where they have left things.

Galileo Galilei is one of the most famous astronomers in history.