Astronomy Tonight

On September 17, 1789, the German-born British astronomer William Herschel discovered a new moon orbiting Saturn, which he named Mimas. This discovery was particularly exciting because Mimas was the f...

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On September 16, 1976, NASA's Viking 2 lander successfully touched down on Mars, becoming the second spacecraft to land on the Red Planet and perform scientific experiments on its surface. This histor...

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On September 15, 1977, NASA's Voyager 1 spacecraft was launched from Cape Canaveral, Florida, on an epic journey that would take it to the outer reaches of our solar system and beyond. This intrepid e...

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On September 14, 1959, the Soviet Union's Luna 2 spacecraft made history by becoming the first human-made object to reach the surface of the Moon. This momentous event marked a significant milestone i...

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On September 13, 1922, a groundbreaking discovery was made by American astronomer Edwin Hubble. While observing the night sky at the Mount Wilson Observatory in California, Hubble spotted a Cepheid va...

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On September 12, 1959, the Soviet Union's Luna 2 spacecraft made history by becoming the first human-made object to reach the surface of the Moon. This monumental achievement marked a significant mile...

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On September 11, 1985, a remarkable astronomical event took place that left stargazers and scientists in awe. The International Cometary Explorer (ICE) spacecraft, originally known as the Internationa...

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On September 10, 1892, an exciting discovery was made by American astronomer Edward Emerson Barnard at the Lick Observatory in California. While observing the night sky through the observatory's 36-in...

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