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Pluto is Something Way More Awesome Than a Mere Planet

Stop hoping that Pluto will regain its former designation as a planet. It isn’t going to happen. But the good news is, Pluto is something much cooler than a mere planet. It’s the largest dwarf planet we know, and one half of the first binary planet system. Pluto didn’t get demoted, it got promoted. » 7/23/15 5:11pm 7/23/15 5:11pm

When We Discovered Pluto, It Changed How We Saw The Solar System

On the 23rd and 24th of January, 1930, a young astronomer working in Flagstaff, Arizona, scanned a small patch of the night sky. He was taking pictures of star positions, looking for anomalies that would signal movement somewhere at the edge of the solar system. He took the pictures then set them aside, not realizing… » 7/12/15 4:25pm 7/12/15 4:25pm