The Sun is the main energy source for satellites , which is why all satellites have solar panel arrays mounted on them. Each array contains thousands of small solar cells which are made of silicon – a material that allows sunlight to be turned into electrical current.
Read moreHow do satellites move in space?
Even when satellites are thousands of miles away, Earth’s gravity still tugs on them . Gravity—combined with the satellite’s momentum from its launch into space—cause the satellite to go into orbit above Earth, instead of falling back down to the ground.
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