Astronomy and Cosmology

3713 topics in this forum

1. spinny-winny spacey-wacey stuff

   By ydoaPs, September 14, 2012
   • 13 replies
   • 2k views
   • 
   • imatfaal
   • September 19, 2012

2. My Pet Peeve About Commonality of Earth-Like Planets

   By Airbrush, September 18, 2012
   • 3 replies
   • 1.1k views
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   • Moontanman
   • September 18, 2012

3. Redshift. 1 2

   By too-open-minded, August 19, 2012
   • 29 replies
   • 5.1k views
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   • pantheory
   • September 16, 2012

4. Supernova Remnants: the Formation of the Earth?

   By deepnessdawn, September 12, 2012
   • 3 replies
   • 1.3k views
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   • Airbrush
   • September 14, 2012

5. How much hydrogen does the sun lose?

   By Peron, September 9, 2012
   • 5 replies
   • 2k views
   • 
   • Airbrush
   • September 14, 2012

6. quick question on telescopes and stars

   By gebreab, September 10, 2012
   • 9 replies
   • 1.5k views
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   • Airbrush
   • September 14, 2012

7. Diracs Large Number Hypothesis

   By Ronald Hyde, August 21, 2012
   • 5 replies
   • 1.4k views
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   • granpa
   • September 14, 2012

8. Do infinite space models contradict Olber's paradox?

   By Huldrich, August 29, 2012
   • 10 replies
   • 2.7k views
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   • Spyman
   • September 14, 2012

9. Opening of "Phenomena of the natural parabola"

   By Valentin Dolzhenko, December 1, 2011
   • 1 reply
   • 2.7k views
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   • Valentin Dolzhenko
   • September 14, 2012

10. What would happen to the atmosphere on Earth if it was adrift in space?

    By CCWilson, August 11, 2012
    • 13 replies
    • 3k views
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    • Moontanman
    • September 14, 2012

11. Death by entropy?

    By NikNak, July 20, 2012
    • 2 replies
    • 1.1k views
    • 
    • JohnStu
    • September 14, 2012

12. physics

    By kevin52, September 4, 2012
    • 2 replies
    • 1.1k views
    • 
    • JohnStu
    • September 14, 2012

13. I believe the universe is electric

    By EMField, August 19, 2012
    • 11 replies
    • 1.9k views
    • 
    • JohnStu
    • September 14, 2012

14. Supernova and spacetime stretching

    By Jacques, September 7, 2012
    • 2 replies
    • 1.1k views
    • 
    • JohnStu
    • September 14, 2012

15. Could Planet X be made of dark matter?

    By Sullinger, September 9, 2012
    • 3 replies
    • 1.4k views
    • 
    • JohnStu
    • September 14, 2012

16. High Energy Cosmic Rays and the Origin of Life

    By deepnessdawn, September 12, 2012
    • 1 reply
    • 1.7k views
    • 
    • JohnStu
    • September 14, 2012

17. Question about Compression/Decompression

    By Richard Perkins, September 8, 2012
    • 1 reply
    • 866 views
    • 
    • JohnStu
    • September 14, 2012

18. The Origin of the Universe

    By deepnessdawn, September 12, 2012
    • 0 replies
    • 768 views
    • 
    • deepnessdawn
    • September 12, 2012

19. Dark Matter and Dark Energy 1 2

    By StringJunky, June 23, 2012
    • 45 replies
    • 7.6k views
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    • pantheory
    • September 6, 2012

20. Planetary Habitability

    By KTevolved, September 6, 2012
    • 1 reply
    • 975 views
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    • Moontanman
    • September 6, 2012

21. Dark Matter and Compton wavelengths

    By LaurieAG, August 28, 2012
    • 5 replies
    • 2.5k views
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    • LaurieAG
    • September 5, 2012

22. Dark Energy

    By jatmacha, August 24, 2012
    • 11 replies
    • 2.2k views
    • 
    • alpha2cen
    • August 25, 2012

23. how many dead stars

    By jatmacha, August 24, 2012
    • 0 replies
    • 750 views
    • 
    • jatmacha
    • August 24, 2012

24. Dark Matter Filament Found

    By StringJunky, July 27, 2012
    • 15 replies
    • 3k views
    • 
    • EMField
    • August 16, 2012

25. Observable Universe and Cosmological Principle

    By the asinine cretin, May 31, 2012
    • 10 replies
    • 1.5k views
    • 
    • Alan McDougall
    • August 16, 2012