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조선살
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LQvFEteOISXX |
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392 |
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| Until August http://xhamster.in.net/ xhampster Our Sun is about 4.6 billion years old, but astronomers have only been observing it with telescopes for about 400 years. In order to get a better picture of how our star ages, scientists must look outside our solar system and observe others. The latest find allows astronomers to look about 4 billion years into the future of our sun. |
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Ronny |
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2019-08-19 23:59:43 |
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