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We often refer to our expanding universe with one simple word: space. But where does space begin and, more importantly, what is it? Space is an almost perfect vacuum, nearly void of matter and with extremely low pressure. In space, sound doesn't carry because there aren't molecules close enough together to transmit sound between them.
Amazing right? Well now lets explore the many amazing sights in space.
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The Sun is a yellow dwarf star at the center of our solar system. Earth and all other objects in our solar system orbit around the Sun due to gravity – the Sun contains over 98% of all mass in the solar system and so exerts a strong gravitational pull.
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