Astronomy and Cosmology

3705 topics in this forum

1. "Headlight" effects in Accretion Disks ?

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

2. I need help answering these questions...

   By hunter4lyf, September 23, 2011
   • 8 replies
   • 2.6k views
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   • tomgwyther
   • October 1, 2011

3. Kepler and Exoplanet Detection

   By the asinine cretin, September 8, 2011
   • 16 replies
   • 2.5k views
   • 
   • the asinine cretin
   • September 30, 2011

4. Spaceship Drive?

   By minimoman, September 24, 2011
   • 10 replies
   • 8.3k views
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   • Schrödinger's hat
   • September 28, 2011

5. Earth flyover by International Space Station

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

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

   By trez500, September 25, 2011
   • 5 replies
   • 1.4k views
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   • insane_alien
   • September 26, 2011

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

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

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

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

9. Are all Magnetic Dynamos the same ?

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

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

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

11. FRW Metric

    By Widdekind, August 24, 2011
    • 4 replies
    • 1.9k views
    • 
    • Widdekind
    • September 25, 2011

12. Finding the answers by look "outward"

    By questionposter, September 22, 2011
    • 6 replies
    • 1.2k views
    • 
    • questionposter
    • September 25, 2011

13. black holes and matter-antimatter imbalance

    By BurntSnow, November 18, 2010
    • 10 replies
    • 3.1k views
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    • csmyth3025
    • September 24, 2011

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

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

15. Star in the East

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

16. Physical constants and the solar system 1 2

    By Roberts ratios, September 17, 2011
    • 25 replies
    • 3.9k views
    • 
    • John Cuthber
    • September 23, 2011

17. The Concept of a Rotational Universe

    By Mike Smith Cosmos, September 17, 2011
    • 8 replies
    • 1.9k views
    • 
    • Widdekind
    • September 22, 2011

18. How near can we be to a black hole?

    By Airbrush, September 13, 2011
    • 3 replies
    • 1.2k views
    • 
    • CaptainPanic
    • September 19, 2011

19. Kepler-16b; a newly discovered planet that orbits two Suns

    By Weirdmaskman, September 17, 2011
    • 0 replies
    • 1.6k views
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    • Weirdmaskman
    • September 17, 2011

20. Mordehai Milgrom Discovered the Hyperbolic Black-Hole Galactic Gravitational Field Effect

    By Gary Anthony Kent, September 15, 2011
    • 1 reply
    • 1.2k views
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    • swansont
    • September 15, 2011

21. Unusual surface feature on dwarf planet Pluto

    By instigator, September 8, 2011
    • 6 replies
    • 1.9k views
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    • Realitycheck
    • September 13, 2011

22. about expanding of universe 1 2

    By URAIN, July 29, 2011
    • 43 replies
    • 7k views
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    • csmyth3025
    • September 13, 2011

23. tracing MWG Mass via Halo GCs vs. Disk MCs ?

    By Widdekind, September 10, 2011
    • 0 replies
    • 1.2k views
    • 
    • Widdekind
    • September 10, 2011

24. Light after Sight?

    By ansurette, September 8, 2011
    • 1 reply
    • 949 views
    • 
    • Realitycheck
    • September 8, 2011

25. Tidal Friction As A Source Of Heat

    By Elen Sila, September 8, 2011
    • 0 replies
    • 1.6k views
    • 
    • Elen Sila
    • September 8, 2011