Portal:Solar System/Did you know/13

• ... that the first engineering analysis of a human mission to Mars (artist's conception pictured) was made by Wernher von Braun in 1948, which included ten ships with seventy crewmembers?

• ...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 the Solar System was being formed?

• ...that the trans-Neptunian object Eris (formerly known as 2003 UB₃₁₃) is native to a distant region of the Solar System known as the scattered disc?