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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.


1,481 topics in this forum

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  1. Does the sun move ? 1 2

    • 25 replies
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  2. Going back to the moon

    • 12 replies
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  3. Big Bang 1 2

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  4. Inhabitable Zone 1 2

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  5. Hawking Radiation

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  6. Second Law of Thermodynamics 1 2 3

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  7. The MIDDLE

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  8. Dark Matter 1 2 3

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  9. Speed of gravity 1 2 3 4 9

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  10. 'Baby' Galaxy question 1 2

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  11. Back to the Moon in 2018 1 2

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  12. The First Atom?

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  13. Star light and no stars

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