Astronomy and Cosmology

3713 topics in this forum

1. my thoughts on these theories... 1 2

   By jorden, September 28, 2011
   • 44 replies
   • 6.6k views
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   • Phi for All
   • October 17, 2011

2. Low Gravity effects on animals

   By deltabomber, October 17, 2011
   • 1 reply
   • 838 views
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   • Schrödinger's hat
   • October 17, 2011

3. First stars from collision-triggered collapses ?

   By Widdekind, October 4, 2011
   • 1 reply
   • 739 views
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   • Widdekind
   • October 9, 2011

4. Shouldn't planets have no core (just shell?)

   By mcpng, October 2, 2011
   • 9 replies
   • 1.6k views
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   • Schrödinger's hat
   • October 8, 2011

5. Need software to Track UARS as it crashes

   By John Phoenix, September 23, 2011
   • 1 reply
   • 1.4k views
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   • rktpro
   • October 7, 2011

6. Retrograde Motion

   By Noza, October 6, 2011
   • 0 replies
   • 692 views
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   • Noza
   • October 6, 2011

7. Carl Sagan Tribute

   By BoatsnHoes, October 5, 2011
   • 2 replies
   • 1.2k views
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   • StringJunky
   • October 5, 2011

8. Nobel in Physics tomorrow (4 Oct) any guesses?

   By Martin, October 3, 2005
   • 13 replies
   • 2.1k views
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   • Locrian
   • October 4, 2011

9. "Headlight" effects in Accretion Disks ?

   By Widdekind, October 1, 2011
   • 1 reply
   • 946 views
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   • Enthalpy
   • October 2, 2011

10. I need help answering these questions...

    By hunter4lyf, September 23, 2011
    • 8 replies
    • 2.7k views
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    • tomgwyther
    • October 1, 2011

11. Kepler and Exoplanet Detection

    By the asinine cretin, September 8, 2011
    • 16 replies
    • 2.7k views
    • 
    • the asinine cretin
    • September 30, 2011

12. Spaceship Drive?

    By minimoman, September 24, 2011
    • 10 replies
    • 8.5k views
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    • Schrödinger's hat
    • September 28, 2011

13. Earth flyover by International Space Station

    By Atmospheric, September 26, 2011
    • 0 replies
    • 937 views
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    • Atmospheric
    • September 26, 2011

14. What would make an alien planet black as coal?

    By trez500, September 25, 2011
    • 5 replies
    • 1.5k views
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    • insane_alien
    • September 26, 2011

15. CMBR isotropy, then --> space isotropy, today ?

    By Widdekind, July 23, 2011
    • 4 replies
    • 2k views
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    • Widdekind
    • September 26, 2011

16. How do we know at all what "should" have happened at the big bang?

    By questionposter, September 26, 2011
    • 1 reply
    • 889 views
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    • Schrödinger's hat
    • September 26, 2011

17. Are all Magnetic Dynamos the same ?

    By Widdekind, September 25, 2011
    • 2 replies
    • 1.2k views
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    • Widdekind
    • September 25, 2011

18. star 'Jets' related to Coronae via Magnetic Braking?

    By Widdekind, September 25, 2011
    • 0 replies
    • 967 views
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    • Widdekind
    • September 25, 2011

19. FRW Metric

    By Widdekind, August 24, 2011
    • 4 replies
    • 2.1k views
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    • Widdekind
    • September 25, 2011

20. Finding the answers by look "outward"

    By questionposter, September 22, 2011
    • 6 replies
    • 1.3k views
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    • questionposter
    • September 25, 2011

21. black holes and matter-antimatter imbalance

    By BurntSnow, November 18, 2010
    • 10 replies
    • 3.3k views
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    • csmyth3025
    • September 24, 2011

22. Stars' wind-blown-bubbles expand with time ?

    By Widdekind, September 22, 2011
    • 2 replies
    • 817 views
    • 
    • Widdekind
    • September 23, 2011

23. Star in the East

    By DavidJames, September 22, 2011
    • 5 replies
    • 1.7k views
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    • imatfaal
    • September 23, 2011

24. Physical constants and the solar system 1 2

    By Roberts ratios, September 17, 2011
    • 25 replies
    • 4.2k views
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    • John Cuthber
    • September 23, 2011

25. The Concept of a Rotational Universe

    By Mike Smith Cosmos, September 17, 2011
    • 8 replies
    • 2k views
    • 
    • Widdekind
    • September 22, 2011