Science and Space History

Discoveries, missions and the people who made them, from early observatories to the space age.

1774 · Science

Joseph Priestley isolates the gas later named oxygen

1612 · Science

Galileo Records Neptune Without Recognizing a Planet

December 28, 1612

1572 · Science

Tycho Brahe Measures a New Star in Cassiopeia

November 11, 1572