Some basic facts:

What can we conclude? Is Mars made of rock, ice, or what? Should it have a thick atmosphere?

Other basic facts:

Why do you suppose that white stuff is there in the lower right of the picture?

How about its motion ?
How about its interior ?
How about its atmosphere like?
What does its surface look like?

Is there life on Mars?

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Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA