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Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...
How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...
The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...