History of astronomy

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Astronomy explained What is a galaxy?

Artist's illustration of the Mariner 9 spacecraft, which studied Mars. Credit: NASA/JPL-Caltech

Mariner 9: the spacecraft that revealed the secrets of Mars

Yuri Gagarin inside the Vostok 1 space capsule just before the flight that would make him the first human in space. Photo: Sovfoto/Universal Images Group via Getty Images

Radio Astronomy Podcast 60 years since Yuri Gagarin's historic flight

Soviet cosmonaut Yuri Gagarin, the first man in space, pictured in the capsule of his Vostok 1 spacecraft, 12 April 1961. Credit: Sovfoto/Universal Images Group via Getty Images

Spaceflight history Yuri Gagarin: the first human in space

Russian rocket engineer Sergei Korolev. Credit: Keystone-France / Getty Images

Spaceflight history Who was Sergei Korolev?

Astronaut Ed White during his historic spacewalk, 3 June 1965. Credit: NASA

Spaceflight history The story of the Space Race

The Celestial Police were a group of 18th century astronomers who discovered asteroid Vesta.

Discovering asteroid Vesta: the story of the Celestial Police

The seven Mercury astronauts were. From left: Wally Schirra, Alan Shepard, Deke Slayton, Gus Grissom, John Glenn, Gordon Cooper and Scott Carpenter. Credits: NASA

Spaceflight history Who were the Mercury 7?

Yuri Gagarin meeting British Prime Minister Harold Macmillan at Admiralty House in London, 13 July 1961. Photo by Fox Photos/Hulton Archive/Getty Images.

Spaceflight history When Yuri Gagarin visited Great Britain

A view of Uranus captured by the Hubble Space Telescope in 2006. Credit: NASA/Space Telescope Science Institute

How was Uranus discovered?

Make your own Galileo telescope replica

DIY Astronomy Build a Galilean telescope

NASA astronaut Mae Jemison onboard Space Shuttle Endeavour in September 1992. Image Credit: NASA

6 women who changed astronomy and spaceflight

NASA scientists installing 1 of 3 Radioisotope Thermoelectric Generators (RTGs) on the Cassini spacecraft. Credit: NASA/JPL-Caltech

Strange stories from the history of spaceflight

The Plough / Ursa Major. Credit: Christophe Lehenaff / Getty Images

Mizar and Alcor: the Plough’s famous double star

The Apollo 14 lunar module on the Moon. Credit: Science & Society Picture Library / Getty Images

Apollo 14 Marking 50 years since the 3rd crewed moonlanding