The International Astronomical Union (IAU) defined a dwarf planet in 2006 as a celestial body that orbits the Sun, is round in shape, but has not cleared its orbital neighborhood of objects of ...
The ancient Greeks proved over 2,000 years ago that the Earth was round and figured out how big it was by using simple observations of the Sun. But how do people know this today? When you drop ...
What do Van Gogh's "Starry Night," traditional Ethiopian coffee ceremonies and a river in Alaska have in common? All are now commemorated in the solar systems around ours. These declarations and ...
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