What causes black holes? ?, when a star dies, when a star melts, when stars implode, How are stars made?, An accumulation of gas and dust,, Humans make stars, Stars make them self, How do stars die?, Stars die because they because they get old, stars die because too much space junk hits stars, Stars die because they exhaust their nuclear fuel, How many stars are there in space ?, 20 billion stars in space, 200 billion trillion stars in the universe., 100 billion, What is the biggest star in space ?, 1, 2, 3, How many people have been to space ?, 533, 421, 685, Who discovered space?, Patty O, Edwin Hubble, Aida Bugg

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