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Astronomy and Space

Space, Human spaceflight, space probes and the exploration of our Solar System. No personal theories or speculation please.


1,478 topics in this forum

  1. Before the Universe 1 2

    • 18 replies
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    • 10 replies
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    • 1 reply
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  2. Black Holes

    • 5 replies
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  3. Save hubble

    • 5 replies
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  4. Accelerating Universe 1 2

    • 17 replies
    • 3.3k views
  5. Speed of Light barrier 1 2 3 4

    • 67 replies
    • 11.5k views
  6. Infinite 1 2

    • 19 replies
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  7. Cmb

    • 5 replies
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  8. Space Ends 1 2

    • 26 replies
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  9. I saw M-5

    • 14 replies
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  10. How a star is born 1 2

    • 26 replies
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  11. Telescopes

    • 9 replies
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    • 47 replies
    • 7.4k views
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