Astronomy and Cosmology

3709 topics in this forum

1. Higgs Boson Discovered

   By Airbrush, July 8, 2012
   • 1 reply
   • 1.2k views
   • 
   • space noob
   • July 8, 2012

2. In the absence of a heat source how long would it take for the earth to freeze solid? 1 2

   By Alan McDougall, July 1, 2012
   • 26 replies
   • 5k views
   • 
   • J.C.MacSwell
   • July 5, 2012

3. Range of the electromagnetic waves?

   By dapifo, June 28, 2012
   • 17 replies
   • 2.3k views
   • 
   • dapifo
   • July 5, 2012

4. Finite or infinite Universe 1 2

   By mr.spaceman, July 1, 2012
   • 25 replies
   • 3.8k views
   • 
   • mr.spaceman
   • July 4, 2012

5. Helium dense zone within the Heliosphere

   By rangertab1, July 1, 2012
   • 0 replies
   • 812 views
   • 
   • rangertab1
   • July 1, 2012

6. How did time flow at the moment of the Big Bang?

   By Alan McDougall, June 30, 2012
   • 20 replies
   • 2.3k views
   • 
   • Alan McDougall
   • July 1, 2012

7. Cyclic models and set theory....

   By _heretic, May 26, 2012
   • 4 replies
   • 1.6k views
   • 
   • robheus
   • June 30, 2012

8. universe using faces to kill shock

   By iwasbitten, June 30, 2012
   • 1 reply
   • 1.4k views
   • 
   • Klaynos
   • June 30, 2012

9. Light years and real time

   By faslan, June 29, 2012
   • 1 reply
   • 855 views
   • 
   • Spyman
   • June 29, 2012

10. Why would the uniform expansion of space produce redshift?

    By Aiden, June 28, 2012
    • 2 replies
    • 885 views
    • 
    • Greg H.
    • June 28, 2012

11. Globular Clusters confirm DM simulations ??

    By Widdekind, April 24, 2011
    • 8 replies
    • 3.4k views
    • 
    • Widdekind
    • June 26, 2012

12. Dark energy

    By too-open-minded, June 19, 2012
    • 7 replies
    • 1.5k views
    • 
    • dimreepr
    • June 24, 2012

13. Solar system

    By eric555, June 22, 2012
    • 9 replies
    • 1.8k views
    • 
    • hypervalent_iodine
    • June 24, 2012

14. Terraforming nearby planets 1 2 3 4

    By TransformerRobot, May 23, 2012
    • 93 replies
    • 12.2k views
    • 
    • D H
    • June 24, 2012

15. Zero Total Energy

    By Polednice, June 2, 2012
    • 24 replies
    • 3.5k views
    • 
    • Aethelwulf
    • June 22, 2012

16. Hubble-class spy satellites donated to NASA.

    By Robert Clark, June 13, 2012
    • 1 reply
    • 1.4k views
    • 
    • Enthalpy
    • June 22, 2012

17. Flat Geometry and the WDW Equation

    By Aethelwulf, June 21, 2012
    • 0 replies
    • 1.1k views
    • 
    • Aethelwulf
    • June 21, 2012

18. Disadvantages/ Disproving Dark Matter and Energy?

    By CherryTarantino, June 21, 2012
    • 4 replies
    • 2.6k views
    • 
    • zapatos
    • June 21, 2012

19. How do I go about learning astrophysics?

    By Ottahhh, June 20, 2012
    • 10 replies
    • 8.9k views
    • 
    • Ophiolite
    • June 21, 2012

20. Kepler Mission Extended to 2016

    By Airbrush, June 19, 2012
    • 0 replies
    • 903 views
    • 
    • Airbrush
    • June 19, 2012

21. Middle of the universe 1 2 3 4 5

    By caharris, June 4, 2011
    • 119 replies
    • 17.6k views
    • 
    • Aethelwulf
    • June 19, 2012

22. Definitions

    By uncool, June 17, 2012
    • 2 replies
    • 1k views
    • 
    • J.C.MacSwell
    • June 17, 2012

23. Comet viewing

    By xtheunknown0, June 16, 2012
    • 1 reply
    • 787 views
    • 
    • Ophiolite
    • June 16, 2012

24. Dark Matter

    By David Levy, June 5, 2012
    • 2 replies
    • 1.2k views
    • 
    • Spyman
    • June 14, 2012

25. Any empty vacuum space light can not travel in the Universe? 1 2

    By alpha2cen, June 2, 2012
    • 32 replies
    • 3.3k views
    • 
    • alpha2cen
    • June 14, 2012