Portal:Solar System/Did you know/13
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- ...that water vapor is probably present in the tenuous atmosphere of Mercury, being brought to the planet by comets?
- ...that the Tagish Lake meteorite originally came from a part of the asteroid belt which existed when our solar system was being formed?
- ...that the trans-Neptunian object Eris (formerly known as 2003 UB313) is native to a distant region of our solar system known as the scattered disc?