Astronomy and Cosmology

3713 topics in this forum

1. Dark Energy- Accelerating expansion of distant universe to negative mass

   By icarus2, March 13, 2012
   • 6 replies
   • 1.7k views
   • 
   • questionposter
   • March 26, 2012

2. Runaway Planets Zoom at a Fraction of Light-Speed

   By the asinine cretin, March 23, 2012
   • 6 replies
   • 1.7k views
   • 
   • Spyman
   • March 25, 2012

3. A new supernova in Messier 95

   By ACG52, March 23, 2012
   • 0 replies
   • 1.1k views
   • 
   • ACG52
   • March 23, 2012

4. Our solar system's hydrogen -- from where??

   By EWyatt, March 9, 2012
   • 9 replies
   • 5k views
   • 
   • Airbrush
   • March 14, 2012

5. More questions about the universe

   By JustinW, March 13, 2012
   • 3 replies
   • 1.5k views
   • 
   • JustinW
   • March 14, 2012

6. Origins, emergence and eschatology of the Universe: Dark Energy & Dark Matter

   By G Anthony, December 14, 2011
   • 5 replies
   • 1.8k views
   • 
   • Bart
   • March 10, 2012

7. New goldilocks planet found dubbed the name Planet G!

   By moonjelly<3, March 9, 2012
   • 3 replies
   • 1.3k views
   • 
   • Widdekind
   • March 10, 2012

8. Death by gamma ray bursts?

   By moonjelly<3, March 8, 2012
   • 2 replies
   • 1.6k views
   • 
   • Airbrush
   • March 8, 2012

9. Hot Jupiters formed cold ?

   By Widdekind, September 22, 2011
   • 13 replies
   • 4.2k views
   • 
   • Widdekind
   • March 4, 2012

10. The moon

    By morgsboi, February 25, 2012
    • 21 replies
    • 2.9k views
    • 
    • ajb
    • March 2, 2012

11. What do you think about sending radioactive waste to sun...?

    By Ikabot, February 20, 2012
    • 21 replies
    • 2.8k views
    • 
    • John Cuthber
    • March 2, 2012

12. Faster than light?

    By *puffy* japanisthebest, February 6, 2012
    • 4 replies
    • 1.7k views
    • 
    • Airbrush
    • March 1, 2012

13. Is a time machine possible? 1 2 3

    By Chap, January 22, 2012
    • 52 replies
    • 9.5k views
    • 
    • zapatos
    • March 1, 2012

14. Speed of a rocket

    By Gozzer101, January 2, 2012
    • 5 replies
    • 1.9k views
    • 
    • JohnStu
    • March 1, 2012

15. Multiple images of same galaxies?

    By Jiggerj, February 5, 2012
    • 20 replies
    • 3.3k views
    • 
    • zapatos
    • February 29, 2012

16. Gravity, Space Time, Black Holes, 5th Dimension and Big Bang

    By arobertson1, February 17, 2012
    • 4 replies
    • 1.5k views
    • 
    • JohnStu
    • February 29, 2012

17. Matter Deficit in Universe?

    By Jiggerj, February 5, 2012
    • 9 replies
    • 2.1k views
    • 
    • Moontanman
    • February 29, 2012

18. Stephen Hawking retracted his paradoxical view 1 2

    By G Anthony, September 8, 2011
    • 38 replies
    • 8.9k views
    • 
    • JohnStu
    • February 29, 2012

19. The Sun

    By homie12, February 5, 2012
    • 16 replies
    • 2.8k views
    • 
    • JohnStu
    • February 29, 2012

20. Black Hole Thermodynamics

    By shepherd, February 20, 2012
    • 9 replies
    • 1.5k views
    • 
    • DrRocket
    • February 29, 2012

21. Muitiple Universes In The Same Space?

    By Some "Genius", December 5, 2011
    • 20 replies
    • 3.3k views
    • 
    • JohnStu
    • February 28, 2012

22. Rhawn Joseph

    By panstein, February 27, 2012
    • 1 reply
    • 1.6k views
    • 
    • Phi for All
    • February 27, 2012

23. Big Bang and only 14 billion years? 1 2

    By Jiggerj, February 15, 2012
    • 40 replies
    • 5.9k views
    • 
    • Phi for All
    • February 19, 2012

24. Keplers Laws.

    By SweetScientist, February 15, 2012
    • 12 replies
    • 1.7k views
    • 
    • PaulS1950
    • February 19, 2012

25. Why does gravity create discs?

    By dimreepr, February 9, 2012
    • 2 replies
    • 1.1k views
    • 
    • Keenidiot
    • February 9, 2012