According to science they were first formed when the glaciers slid over the land causing that valleys and mountains that we have today.
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. ... This is the picture taken by the Hubble Space Telescope showing thousands of galaxies.
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not sure but hope u find a answer
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it is a rights angle because a poster has to be even all the way around and the only way for that is for it to be a right angle
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fairly well thank you for asking how about you
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