Astronomy and Cosmology

3713 topics in this forum

1. Artificial Gravity on Mars? 1 2

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

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

   By michel123456, March 16, 2010
   • 206 replies
   • 28k views
   • 
   • Spyman
   • May 6, 2010

3. Planck Analysis of the Orion Constellation

   By Radical Edward, April 26, 2010
   • 0 replies
   • 1k views
   • 
   • Radical Edward
   • April 26, 2010

4. Particles accelerators and cosmology

   By pioneer, April 26, 2010
   • 5 replies
   • 1.5k views
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   • pioneer
   • April 26, 2010

5. Question About Nasa's New Horizon

   By JFerstler, April 24, 2010
   • 7 replies
   • 1.3k views
   • 
   • Tnad
   • April 26, 2010

6. Can the speed of SOUND actually slow down?

   By japan rocks/andromeda, April 21, 2010
   • 21 replies
   • 10.4k views
   • 
   • michel123456
   • April 25, 2010

7. neutron star

   By stevebtaylor, April 21, 2010
   • 8 replies
   • 1.4k views
   • 
   • stevebtaylor
   • April 22, 2010

8. what happened to...

   By japan rocks/andromeda, April 20, 2010
   • 3 replies
   • 1.3k views
   • 
   • Airbrush
   • April 22, 2010

9. Momentum of a single photon

   By PaulS1950, April 20, 2010
   • 8 replies
   • 1.6k views
   • 
   • swansont
   • April 21, 2010

10. Can Light Actually Slow Down?

    By CameronFriday, April 17, 2010
    • 13 replies
    • 2.6k views
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    • D H
    • April 21, 2010

11. The expansion of space and redshift of light

    By Chromed1, April 20, 2010
    • 1 reply
    • 2.2k views
    • 
    • Spyman
    • April 21, 2010

12. triple point of light

    By stevebtaylor, March 24, 2010
    • 12 replies
    • 1.8k views
    • 
    • stevebtaylor
    • April 19, 2010

13. saturation point of light 1 2

    By stevebtaylor, March 30, 2010
    • 25 replies
    • 3.8k views
    • 
    • stevebtaylor
    • April 19, 2010

14. Gravitational-wave Singularity 1 2

    By stevebtaylor, March 26, 2010
    • 26 replies
    • 3.6k views
    • 
    • stevebtaylor
    • April 19, 2010

15. 3-step blackhole

    By stevebtaylor, April 16, 2010
    • 2 replies
    • 914 views
    • 
    • stevebtaylor
    • April 19, 2010

16. Solar Wind as an energy source?

    By Joshua Buffone, April 11, 2010
    • 3 replies
    • 1.2k views
    • 
    • Mr Skeptic
    • April 19, 2010

17. The wmap image, how can it be accurate?

    By epsilonbeta, April 17, 2010
    • 0 replies
    • 681 views
    • 
    • epsilonbeta
    • April 17, 2010

18. How do comp. sims. handle space Expansion?

    By Widdekind, April 10, 2010
    • 4 replies
    • 974 views
    • 
    • Widdekind
    • April 17, 2010

19. 30% of Nuclear Arsenals, for what?

    By Airbrush, April 14, 2010
    • 21 replies
    • 3.1k views
    • 
    • Airbrush
    • April 16, 2010

20. Composite "All Spectrum" Telescopes ??

    By Widdekind, April 16, 2010
    • 1 reply
    • 737 views
    • 
    • swansont
    • April 16, 2010

21. new supernovae

    By harls, April 15, 2010
    • 1 reply
    • 827 views
    • 
    • Arch2008
    • April 15, 2010

22. Could this explain the dark energy phenomenon? 1 2

    By john hunter, March 23, 2010
    • 31 replies
    • 4.1k views
    • 
    • michel123456
    • April 15, 2010

23. Fact or fiction?

    By pink_trike, April 12, 2010
    • 9 replies
    • 2k views
    • 
    • tomgwyther
    • April 14, 2010

24. wondering what is up with our sun

    By japan rocks/andromeda, March 27, 2010
    • 5 replies
    • 1.2k views
    • 
    • the tree
    • April 14, 2010

25. have you ever thought...

    By japan rocks/andromeda, March 27, 2010
    • 4 replies
    • 1.2k views
    • 
    • japan rocks/andromeda
    • April 13, 2010