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4
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2answers
62 views

Is it possible that only one hemisphere of a planet has an atmosphere?

Suppose there is a tidally locked planet orbiting a star. The planet's surface consists of a global ocean, that is, liquid water. At the inner hemisphere the temperature is so high that the water is ...
2
votes
2answers
945 views

Artificial planetary magnetic field

I wonder how difficult it is to create an artificial planetary magnetic field with generators? What power they would need? The question is inspired by thinking about possible colonization of ...
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1answer
195 views

Is water necessary for forming the sedimentary rocks found on Mars' surface?

So, I've just been reading a recent ScienceDaily article, and came across this interesting quote "Clays form in more neutral, less acidic conditions than the sulfate-rich sandstones we've been ...
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5answers
2k views

What sustains the rotation of earth's core (faster than surface)?

I recently read that the earth's core rotates faster than the surface. Well, firstly, it's easier to digest the concept of planetary bodies, stars, galaxies in rotation and/or orbital motion. But, ...