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Questions tagged [planetology]

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1answer
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What type of rock formed first on earth and which rock is the oldest? [duplicate]

It could be sedimantary or metamorphic rock or intrusive igneous rock
4
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0answers
62 views

Can a cryovolcanic eruption be as powerful as a normal volcanic eruption?

The most powerful volcanic eruption in recorded history was the 1815 eruption of Mount Tambora, an explosion equivalent to 33 billion tons of TNT. Is there any way a cryovolcanic eruption could be as ...
3
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2answers
88 views

Is the atmosphere a part of Earth?

My question is quite simple, but I can't seem to find any answer to it: how do we define the limit of the object "Earth"? More specifically, can we consider the atmosphere a part of it? Or even the ...
10
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1answer
166 views

How would a Mars rover identify a microbialite fossil?

I recently read of a company in Canada using robotic technology to study freshwater microbialites. Their claim is that greater understanding of terrestrial microbialites could help in the search for ...
7
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1answer
224 views

Can the clouds on Venus and Titan be categorized in the same way as clouds on Earth?

E.g. are the clouds on Venus (and Titan) cumulus, stratus, cirrus, or some other type that isn't found on Earth?