Question

Which planet is known as rusty planet and fossil planet?

Answer 1

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$\color{blue}{MARS\: = \:RUSTY\: PLANET }$

$\color{blue}{MOON\: = \:FOSSIL\: PLANET }$

Moon is known as fossil planet.

and, Mars is known as rusty planet.

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Answer 2

• Mars and Moon is called as Rusty planet and Fossil planet respectively.  
• In Mars there a lot of iron oxide present in the surface and atmosphere.
• It is the same thing which is the rust made of. That’s why Mars is the Rusty planet.
• Though moon is not a planet still it’s called as fossil planet because of the absence of atmosphere which helps everything to keep intact.
• Even the mars of Apollo 11 astronauts are still visible on Moon.