Ancient Greek astronomer Hipparchus, illustrated in his observatory in Alexandria, Egypt, was thought to have written the first star catalog. Now researchers have found part of it hidden in a medieval codex.
Nastasic/DigitalVision Vectors/Getty
Ancient Greek astronomer Hipparchus, illustrated in his observatory in Alexandria, Egypt, was thought to have written the first star catalog. Now researchers have found part of it hidden in a medieval codex.
Nastasic/DigitalVision Vectors/Getty