In the early 19th century, Giuseppe Piazzi and a group of astronomers called the Celestial Police turned their telescopes towards the sky in search of a missing planet between Mars and Jupiter. What they discovered instead was something unexpected—not a lone planet but many smaller objects that would later be classified as the first asteroids. Today, scientists use data from spacecraft missions to get a better look at the surface of asteroids and study their compositions.
Hear Dr. Jennifer Scully, a NASA scientist and member of the Dawn mission team explain how our understanding of asteroids evolved over the last two centuries.
https://www.nationalgeographic.com/science/article/how-the-hunt-for-a-missing-planet-revealed-asteroids-in-our-solar-system
2021-08-17 12:13:13Z
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