Astronomy and Cosmology

3709 topics in this forum

1. Different Compositions of Colored Atmosphere?

   By kairunotabi, February 15, 2013
   • 4 replies
   • 1.2k views
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   • Enthalpy
   • February 17, 2013

2. whats gonna happen?

   By dripto biswas, February 14, 2013
   • 1 reply
   • 794 views
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   • pwagen
   • February 14, 2013

3. Interesting way to look at mother earth using a balloon and some good music !

   By dbFrame, February 13, 2013
   • 0 replies
   • 528 views
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   • dbFrame
   • February 13, 2013

4. do orbiting stars distort black holes?

   By 36grit, February 8, 2013
   • 7 replies
   • 1.4k views
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   • ajb
   • February 10, 2013

5. Earth-like planet only 13 LY away

   By Airbrush, February 8, 2013
   • 0 replies
   • 1.1k views
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   • Airbrush
   • February 8, 2013

6. "Creation" of the Universe

   By Ivan Tuzikov, February 5, 2013
   • 7 replies
   • 1.7k views
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   • Spyman
   • February 6, 2013

7. Complete information about Black hole

   By NaxAlpha, January 14, 2013
   • 19 replies
   • 2.1k views
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   • Arch2008
   • February 5, 2013

8. How do we know the universe isn't a loop?

   By SamBridge, January 30, 2013
   • 20 replies
   • 2.2k views
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   • SamBridge
   • February 5, 2013

9. Origin of globular clusters

   By maze, February 4, 2013
   • 0 replies
   • 693 views
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   • maze
   • February 4, 2013

10. What is the rate at which a black hole's gravity weakens as one gets further away?

    By arknd, January 29, 2013
    • 7 replies
    • 1.9k views
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    • Airbrush
    • February 4, 2013

11. Need a scientific adviser for space-strategy game

    By AaronD, February 3, 2013
    • 3 replies
    • 956 views
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    • AaronD
    • February 4, 2013

12. How do we know that stars exist some billion years far?

    By TouK, January 28, 2013
    • 8 replies
    • 1.5k views
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    • alpha2cen
    • January 28, 2013

13. René Descartes's Theory

    By N S, January 20, 2013
    • 5 replies
    • 3.5k views
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    • Civat
    • January 27, 2013

14. Is the same goof being committed in other planets ?

    By Externet, January 21, 2013
    • 8 replies
    • 1.5k views
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    • D H
    • January 24, 2013

15. The luminosity distance and supernovae data

    By cosmos0, January 20, 2013
    • 1 reply
    • 1.4k views
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    • alpha2cen
    • January 20, 2013

16. The Largest Structure In the Universe.

    By DarkStar8, January 11, 2013
    • 6 replies
    • 1.6k views
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    • alpha2cen
    • January 19, 2013

17. The Universe expanding at the speed of light? 1 2

    By Strattos, December 12, 2012
    • 40 replies
    • 5k views
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    • Spyman
    • January 18, 2013

18. Expansion of spacetime: Great Break?

    By Coyote, January 17, 2013
    • 3 replies
    • 1.1k views
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    • ACG52
    • January 18, 2013

19. No need for dark energy

    By Jacques, January 11, 2013
    • 13 replies
    • 1.9k views
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    • JohnCli
    • January 16, 2013

20. Interstellar iron cloud deoxygenating the Earth's atmostphere: plausible or nonsense?

    By Fanghur, January 13, 2013
    • 5 replies
    • 1.9k views
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    • John Cuthber
    • January 15, 2013

21. Speed Of Time On Mars Relative To That On Earth

    By grandlear, January 13, 2013
    • 2 replies
    • 2k views
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    • swansont
    • January 14, 2013

22. How can the universe be infinite in size? 1 2 3

    By Airbrush, December 17, 2012
    • 52 replies
    • 7.7k views
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    • Spyman
    • January 14, 2013

23. Curvature of universe

    By NaxAlpha, January 12, 2013
    • 3 replies
    • 1.2k views
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    • elfmotat
    • January 12, 2013

24. Why are early objects so massive?

    By DarkStar8, January 8, 2013
    • 2 replies
    • 837 views
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    • Arch2008
    • January 9, 2013

25. How can the Universe not be infinite in size?

    By Selectrick, January 4, 2013
    • 2 replies
    • 796 views
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    • imatfaal
    • January 7, 2013