Explore a subject through time
Space timeline
Astronomy, spaceflight and cosmic milestones.
38 moments in QuoAnno
Reading the timeline
A wider chronology
Space history joins two related chronologies: the long development of astronomy and the much more recent era of spaceflight. Careful observations changed models of the heavens long before rockets placed instruments and people beyond Earth.
The modern timeline moves quickly from early satellites to crewed missions, robotic exploration, space telescopes and the study of planets around other stars. These milestones are international and cumulative, built from engineering, scientific theory, public institutions and sustained observation.
What this category covers
Themes to follow
Observing the sky
Measurements and instruments that changed humanity's map of the universe.
Leaving Earth
Rockets, satellites and crewed missions that opened the space age.
Planetary exploration
Robotic missions that extended direct investigation across the Solar System.
Distant worlds
Telescopes and detection methods that reveal galaxies, exoplanets and cosmic history.
Across the category
Timeline highlights
The Moon forms
The leading giant-impact model explains many features of the Earth-Moon system.
William Herschel discovers Uranus
Most of the planet is made of water, ammonia, and methane in a supercritical phase of matter, which astronomers call "ice" or "volatiles".
Sputnik 1 is launched
Sputnik’s radio beeps became an iconic sound of the early Space Age.
Valentina Tereshkova becomes the first woman in space
'Orient 6' or 'East 6') was the first human spaceflight to carry a woman, cosmonaut Valentina Tereshkova, into space.
Humans first land on the Moon
Neil Armstrong and Buzz Aldrin walked on the Moon while Michael Collins remained in lunar orbit.
Mars 3 makes the first soft landing on Mars
Mars 3 was a robotic space probe of the Soviet Mars program, launched May 28, 1971, nine days after its twin spacecraft Mars 2.
The Space Shuttle makes its first orbital flight
STS-1 was the first orbital spaceflight of NASA's Space Shuttle program.
First long-duration crew arrives at the International Space Station
The station has been continuously occupied since November 2000.
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Further reading
These independent reference works and institutions provide broader context. QuoAnno links to them for further reading; the summaries on this page are original and are not copied from those sources.
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