Astronomy and Cosmology

3705 topics in this forum

1. Lectures on inflation and cosmological perturbations

   By ajb, February 2, 2010
   • 0 replies
   • 843 views
   • 
   • ajb
   • February 2, 2010

2. Importance of Specific Grav. Binding Energy (??)

   By Widdekind, February 1, 2010
   • 2 replies
   • 1.3k views
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   • Widdekind
   • February 2, 2010

3. Andromeda Galaxy

   By purintjp, January 28, 2010
   • 11 replies
   • 1.7k views
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   • Martin
   • February 2, 2010

4. "Harmonices Mundi"

   By Proteus, January 30, 2010
   • 4 replies
   • 1.4k views
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   • insane_alien
   • January 31, 2010

5. We're getting farther from the Great Attractor (anyone have details on this?)

   By Martin, January 30, 2010
   • 0 replies
   • 1.4k views
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   • Martin
   • January 30, 2010

6. Recommend me a refresher....

   By Salsaman, January 27, 2010
   • 1 reply
   • 751 views
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   • dalemiller
   • January 27, 2010

7. What would happen if the universe stopped expanding?

   By astro geek, January 17, 2010
   • 8 replies
   • 8.4k views
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   • Airbrush
   • January 26, 2010

8. Light vs.Gravity

   By lucky45, January 23, 2010
   • 4 replies
   • 983 views
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   • Airbrush
   • January 25, 2010

9. Is gravity wave a mechanical or electromagnet wave?

   By electronicsound, January 22, 2010
   • 3 replies
   • 1.1k views
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   • ajb
   • January 22, 2010

10. The universe is expanding exponentially 1 2

    By gib65, October 11, 2005
    • 43 replies
    • 6.6k views
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    • mooeypoo
    • January 22, 2010

11. Light sails

    By Horza2002, January 21, 2010
    • 8 replies
    • 1.3k views
    • 
    • Mr Skeptic
    • January 22, 2010

12. Nice supercomputer sim of the formation of a small galaxy

    By Martin, January 18, 2010
    • 0 replies
    • 802 views
    • 
    • Martin
    • January 18, 2010

13. Help with a (seeming) discrepancy?

    By Baby Astronaut, December 17, 2009
    • 7 replies
    • 1.7k views
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    • Martin
    • January 17, 2010

14. Magnetic lines in space?

    By Fozzie, January 15, 2010
    • 0 replies
    • 709 views
    • 
    • Fozzie
    • January 15, 2010

15. A Problem in Cold Dark Matter Theory Resolved?

    By toastywombel, January 14, 2010
    • 1 reply
    • 1.2k views
    • 
    • Martin
    • January 14, 2010

16. Martian "forest"

    By Arch2008, January 14, 2010
    • 0 replies
    • 704 views
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    • Arch2008
    • January 14, 2010

17. Overcoming common misconceptions of big bang cosmology

    By Martin, January 25, 2008
    • 15 replies
    • 6k views
    • 
    • michel123456
    • January 13, 2010

18. The Norway Spiral and the LHC: Do they coincide?

    By cdub2raw, January 13, 2010
    • 1 reply
    • 857 views
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    • randomc
    • January 13, 2010

19. Black Holes

    By jasonatron, January 8, 2010
    • 19 replies
    • 2.3k views
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    • eoinmac
    • January 12, 2010

20. The block universe concept, pros and cons.

    By ajb, January 11, 2010
    • 11 replies
    • 3.9k views
    • 
    • ajb
    • January 12, 2010

21. Electromagnetic Re-Entry Heat Shield

    By JoeOh, January 11, 2010
    • 0 replies
    • 1.9k views
    • 
    • JoeOh
    • January 11, 2010

22. Hello From Sydney

    By beejewel, January 10, 2010
    • 1 reply
    • 888 views
    • 
    • Pangloss
    • January 10, 2010

23. Shape of the Universe?

    By Tau Meson, January 9, 2010
    • 3 replies
    • 950 views
    • 
    • ajb
    • January 9, 2010

24. Possible explanation for planets formations ?

    By Widdekind, December 28, 2009
    • 2 replies
    • 887 views
    • 
    • Widdekind
    • January 8, 2010

25. The Russians are coming!

    By Arch2008, December 30, 2009
    • 4 replies
    • 1.2k views
    • 
    • Airbrush
    • January 8, 2010