June 30, 2021
For educational institutions
⟶ Updated 5 Sep 2017 ⟶
List of edits
Ptolemy publishses the Almagest.
Hipparchus publishes his work.
Antikythera Mechanism in use.
Pyramids aligned in accordance with the Pole Star.
First star catalogue in China.
First recorded supernova.
Creation of the Crab Nebula obvserved in China.
First Middle Eastern star catalogs.
Azophi publishes the Book of Fixed Stars.
Large Magellanic Cloud recorded by al-Sufi.
Ali ibn Ridwan observes SN 1006.
Bede of Jarrow publishes On the Reckoning of Time.
Nicholas Copernicus proposes the Heliocentric Model.
Galileo observes Jupiter's Moons 1610.
Maria Mitchell discovers a comet with a telescope.
Edwin Hubble discovers other galaxies and redshift.
Spunik I reaches orbit.
Explorer I discovers the Van Allen Radiation Belt.
Luna III photographs the far side of the moon.
First photo of Earth from orbit.
First manned space mission Vostok I.
First planetary flyby (Venus) Venera I.
First solar observatory OSO-I.
First Mars flyby Mariner 4.
First soft landing on another celestial body (Moon) First photos from another celestial body.
First ultraviolet observatory OAO-II
First humans on the Moon
First robotic return of soil from another celestial body: the Moon: Luna 16
First remote controlled vehicle on another celestial body: the Moon: Lunokhod I
First X-Ray orbital obvservatory: Uhuru NASA
First soft landing on another planet: Venus: Venera 7
First soft landing on Mars: Mars 3
First gamma ray observatory: SAS 2
First Jupiter flyby: Pioneer 10
First Mercury flyby: Mariner 10
Cassini-Huygens launched: bound for Saturn.
Launch of the Dawn: bound for Vesta and Ceres
Launch of the Galileo spacecraft: bound for Jupiter and her moons.
Launch of the Juno spacecraft: bound for Venus
Launch of Rosetta: bound for comet
Rosetta reaches comet 67P First orbit of a comet by an artificial craft. First landing on a comet.
Launch of the Hubble Space Telescope
James Web Planned Launch Date Ocotber 2018
Chandra X-ray Observatory is put into orbit. Col. Eileen Collins becomes first woman shuttle commander.
New evidence found for water on Mars.
Galileo discovers origin of Jupiter's Rings.
Mount Wilson Observatory was established for study of the Sun.
Rocket pioneer Konstantin Tsiolkovskii was born.
Newton publishes Philosophiae Naturalis Principia Mathematica.
The beginning of spectral analysis of stars by Sir William Huggins
About & Feedback