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Landmarks in Space Exploration
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First privately developed liquid-fueled rocket to reach orbit
September 28, 2008 - SpaceX's Falcon 1 achieved orbit.
First interstellar object detected passing through the Solar System
October 19, 2017 - Astronomers observed 'Oumuamua passing through the Solar System.
First artificial satellite
October 4, 1957 - Sputnik 1 was launched by the Soviet Union.
First space telescope
April 24, 1990 - Hubble Space Telescope was launched into low Earth orbit by the Space Shuttle Discovery.
First human Moon landing
July 20, 1969 - Apollo 11 mission, Neil Armstrong and Buzz Aldrin walked on the Moon.
Discovery of the first exoplanet
1995 - Michel Mayor and Didier Queloz discovered 51 Pegasi b, the first confirmed exoplanet orbiting a sun-like star.
First reusable spacecraft
April 12, 1981 - NASA's Space Shuttle Columbia launched as STS-1, marking its first orbital mission.
First rover on Mars
July 4, 1997 - Mars Pathfinder mission's Sojourner rover landed on Mars.
First sample return mission from an asteroid
December 6, 2020 - Japan's Hayabusa2 mission successfully returned samples from asteroid Ryugu.
First Pluto flyby
July 14, 2015 - NASA's New Horizons spacecraft made its closest approach to Pluto.
First picture of a black hole
April 10, 2019 - The Event Horizon Telescope (EHT) captures an image of the black hole in the galaxy M87.
First human in space
April 12, 1961 - Yuri Gagarin orbited Earth aboard Vostok 1.
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