soil

Questions and Answers

What are the movements of the moon, the sun and the planets how we perceive them from Earth? And why are those movements...

Questions and Answers

At what temperature does ice begin to sublimate in a vacuum?

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How thick does ice have to be before you can walk or skate on it?

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How far can one go back in time by drilling into the ice of Antarctica?

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At how many places on Earth are measurements made for earthquakes?

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Why do the outer planets around them have many more moons and layers of gas than the inner planets?

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What is the composition of our sun and its planets/moons and why is that composition so different?

Questions and Answers

If the moon had rotated on its own axis, would the moon have been a mini-Earth?