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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…

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This Newly-Discovered Dwarf Planet Is the Most Distant Object In Our Solar System

V774104: That’s the name of the new dwarf planet astronomers revealed this week, and it’s three times as far away from the sun as Pluto. It’s the most distant object ever discovered in our solar system—and it could mean there are even more far-flung planets in our corner of the universe just waiting to be discovered.