Astronomy and Cosmology

3705 topics in this forum

1. Mass of Cosmic Bodies - How Are They Estimated?

   By jimmydasaint, June 3, 2010
   • 2 replies
   • 814 views
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   • jimmydasaint
   • June 4, 2010

2. "clumps" of Cold Neutrinos = Dark Matter ??

   By Widdekind, April 25, 2010
   • 8 replies
   • 2.3k views
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   • insane_alien
   • June 2, 2010

3. Lots of good astronomy documentaries

   By CaptainPanic, May 31, 2010
   • 2 replies
   • 2.7k views
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   • Nano
   • May 31, 2010

4. Black Hole, maybe?

   By rigney, May 26, 2010
   • 9 replies
   • 1.6k views
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   • Nano
   • May 31, 2010

5. The Role of Gravity

   By OSHMUNNIES, April 21, 2010
   • 11 replies
   • 2.1k views
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   • Nano
   • May 29, 2010

6. Quibbles with the balloon analogy

   By michel123456, January 8, 2010
   • 22 replies
   • 5k views
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   • J.C.MacSwell
   • May 28, 2010

7. Quick Q about the Hubble Constant

   By Leader Bee, May 28, 2010
   • 5 replies
   • 1.1k views
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   • michel123456
   • May 28, 2010

8. Parallel lines

   By rigney, May 24, 2010
   • 6 replies
   • 1.3k views
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   • rigney
   • May 28, 2010

9. Black Whirpool.

   By Nano, May 22, 2010
   • 4 replies
   • 1.3k views
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   • Spyman
   • May 24, 2010

10. Chat with hot singularities in your area

    By TrumpetPlayer, May 20, 2010
    • 10 replies
    • 1.4k views
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    • Nano
    • May 23, 2010

11. Galaxies, nebula, and what they look like

    By brakeb, May 20, 2010
    • 4 replies
    • 1k views
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    • Nano
    • May 22, 2010

12. Black Hole

    By catcow1964, April 21, 2010
    • 4 replies
    • 1.2k views
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    • Airbrush
    • May 19, 2010

13. Cosmology theory

    By adrianos, May 15, 2010
    • 6 replies
    • 1.4k views
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    • insane_alien
    • May 19, 2010

14. Kepler Mission's One Year Anniversary

    By Airbrush, May 12, 2010
    • 1 reply
    • 731 views
    • 
    • Airbrush
    • May 19, 2010

15. Need advice regarding telescope magnification

    By Mukilab, May 12, 2010
    • 0 replies
    • 793 views
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    • Mukilab
    • May 12, 2010

16. FYI ESA's Herschel

    By Arch2008, May 11, 2010
    • 0 replies
    • 865 views
    • 
    • Arch2008
    • May 11, 2010

17. Expansion and Contraction of the Universe

    By TheBigCrunch, May 7, 2010
    • 2 replies
    • 1.7k views
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    • FooFiFum
    • May 10, 2010

18. Artificial Gravity on Mars? 1 2

    By Airbrush, April 25, 2010
    • 39 replies
    • 5.5k views
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    • PaulS1950
    • May 6, 2010

19. Can we see it? 1 2 3 4 9

    By michel123456, March 16, 2010
    • 206 replies
    • 25.6k views
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    • Spyman
    • May 6, 2010

20. Planck Analysis of the Orion Constellation

    By Radical Edward, April 26, 2010
    • 0 replies
    • 998 views
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    • Radical Edward
    • April 26, 2010

21. Particles accelerators and cosmology

    By pioneer, April 26, 2010
    • 5 replies
    • 1.3k views
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    • pioneer
    • April 26, 2010

22. Question About Nasa's New Horizon

    By JFerstler, April 24, 2010
    • 7 replies
    • 1.2k views
    • 
    • Tnad
    • April 26, 2010

23. Can the speed of SOUND actually slow down?

    By japan rocks/andromeda, April 21, 2010
    • 21 replies
    • 10.1k views
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    • michel123456
    • April 25, 2010

24. neutron star

    By stevebtaylor, April 21, 2010
    • 8 replies
    • 1.3k views
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    • stevebtaylor
    • April 22, 2010

25. what happened to...

    By japan rocks/andromeda, April 20, 2010
    • 3 replies
    • 1.2k views
    • 
    • Airbrush
    • April 22, 2010