Carl Sagan - Kozmosz 9. rész - A csillagok életre kellnek (Carl Sagan - Cosmos - The Lives of the Stars)

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Carl Sagan, A Universe Not Made For Us

Carl Sagan, A Universe Not Made For Us

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Carl Sagan, Stephen Hawking and Arthur C. Clarke - God, The Universe and Everything Else (1988)

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Our Universe May Be Full of Massive Dark Matter Stars

Our Universe May Be Full of Massive Dark Matter Stars

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Allah o Akbar,study of universe,Thousands of stars bigger then sun,and Other Glaxies are bigger crore time bigger then our glaxy:

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