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Chinese record supernova that produces the Crab Nebula
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Kepler's laws of planetary motion are published
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Christian Huygens discovers Saturn's rings and the fourth satellite of Saturn, also known as the Titan.
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William Herschel discovered Uranus in 1781. This is the first new planet to be discovered since ancient times.
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The first photographs of the sky are taken.
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The Hooker 100" Telescope in California proves that galaxies are groups of stars like the MIlky Way. Discovery made by Edwin Hubble.
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The first satellite is now in orbit.
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Neil Armstrong became the first man to ever step foot on the moon.
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First transiting exoplanet observed
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NASA's Spitzer Space Telescope finds the first water vapor to be detected on an exoplanet