Astronomy and Cosmology

3705 topics in this forum

1. Schwarzschild Solution in Closed Cosmos ?

   By Widdekind, February 20, 2011
   • 2 replies
   • 1.7k views
   • 
   • Widdekind
   • February 22, 2011

2. What measures if any will ever be put in place to defend from asteroids?

   By Juryoku, February 21, 2011
   • 5 replies
   • 1.9k views
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   • Mrs Zeta
   • February 21, 2011

3. Conservation of energy

   By Dart15, February 18, 2011
   • 7 replies
   • 2.5k views
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   • SMF
   • February 21, 2011

4. heat from sun 1 2

   By Athena, February 17, 2011
   • 26 replies
   • 4.2k views
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   • Athena
   • February 21, 2011

5. Why not make a better ISS?

   By tjsterc17, February 20, 2011
   • 7 replies
   • 1.6k views
   • 
   • CaptainPanic
   • February 21, 2011

6. News: The International Astronomical Union has no Definition for Big Bang

   By DavidD, February 10, 2011
   • 16 replies
   • 7.2k views
   • 
   • ajb
   • February 20, 2011

7. Why is CMB visible through cosmic 'Dark Ages' ?

   By Widdekind, February 13, 2011
   • 9 replies
   • 3k views
   • 
   • imatfaal
   • February 16, 2011

8. Why no 'Mini Cosmoses' ??

   By Widdekind, February 15, 2011
   • 1 reply
   • 968 views
   • 
   • Widdekind
   • February 15, 2011

9. Mass before black hole.

   By alpha2cen, February 10, 2011
   • 13 replies
   • 3.4k views
   • 
   • Spyman
   • February 15, 2011

10. Size of a black hole.

    By Sedit, February 10, 2011
    • 8 replies
    • 2.8k views
    • 
    • steevey
    • February 14, 2011

11. the origin of the very high energy cosmic ray ?

    By alpha2cen, February 7, 2011
    • 10 replies
    • 1.4k views
    • 
    • alpha2cen
    • February 13, 2011

12. Sub-Divisions of Astrology

    By Deepak Garg, February 11, 2011
    • 2 replies
    • 902 views
    • 
    • StringJunky
    • February 11, 2011

13. The Big Bang. Some Explainations?

    By VoloScientiam, February 10, 2011
    • 4 replies
    • 1.2k views
    • 
    • VoloScientiam
    • February 10, 2011

14. multiple universes

    By petebro, May 7, 2009
    • 7 replies
    • 1.7k views
    • 
    • steevey
    • February 10, 2011

15. How does our Galaxy maintain a fixed form?

    By alpha2cen, January 29, 2011
    • 12 replies
    • 2.6k views
    • 
    • steevey
    • February 10, 2011

16. Dark Matter and Gravity

    By foodchain, February 19, 2010
    • 5 replies
    • 1.6k views
    • 
    • alpha2cen
    • February 8, 2011

17. Convection -- Forest Fires on Exoplanets ??

    By Widdekind, January 8, 2010
    • 5 replies
    • 1.4k views
    • 
    • steevey
    • February 8, 2011

18. How can distinguish conves and concave gravitational lensing effect?

    By icarus2, December 13, 2009
    • 3 replies
    • 2.5k views
    • 
    • IM Egdall
    • February 7, 2011

19. Young Sun blasted Methane out of Inner System

    By Widdekind, May 14, 2009
    • 2 replies
    • 1.2k views
    • 
    • alpha2cen
    • February 7, 2011

20. Fractal World?

    By vasosland, February 17, 2010
    • 1 reply
    • 762 views
    • 
    • steevey
    • February 7, 2011

21. giant mysterious objects around a star

    By dream888, December 3, 2010
    • 1 reply
    • 986 views
    • 
    • steevey
    • February 7, 2011

22. Solar radiation and Earth orbit

    By alpha2cen, February 6, 2011
    • 2 replies
    • 1.2k views
    • 
    • D H
    • February 6, 2011

23. Earth gravity effect on the moon surface?

    By alpha2cen, February 6, 2011
    • 2 replies
    • 846 views
    • 
    • insane_alien
    • February 6, 2011

24. New Kepler Discoveries!

    By Airbrush, February 4, 2011
    • 1 reply
    • 748 views
    • 
    • IM Egdall
    • February 5, 2011

25. The Greatest Books in Astronomy?

    By ExploreScience, February 5, 2011
    • 1 reply
    • 725 views
    • 
    • IM Egdall
    • February 5, 2011