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How are stars formed? They are formed when gravitational attraction pulls
clouds of dust, rock and gas together, creating heat
that causes it to become hydrogen and then for the
hydrogen to fuse.
What happens to stars the size of our sun at the They expand to become red giants,…

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What type of orbit does a monitoring satellite It has a low polar orbit (it passes continuously over the
have? North and South poles, so that the Earth spins beneath
it.)
Are the angles of incidence and angles of They are equal?
reflection equal or unequal?
What is the `normal'…

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