Astronomy and Cosmology

3713 topics in this forum

1. Judging Jupiter's distance in the 1600's

   By Jiggerj, January 31, 2012
   • 12 replies
   • 2.3k views
   • 
   • Jiggerj
   • February 8, 2012

2. How do they know it?

   By Airbrush, February 2, 2012
   • 14 replies
   • 2.4k views
   • 
   • imatfaal
   • February 7, 2012

3. My theory to the Universe

   By ncook90, January 25, 2012
   • 5 replies
   • 1.6k views
   • 
   • Jiggerj
   • February 5, 2012

4. Only steps away from the Void

   By PhysicsBurger, February 4, 2012
   • 2 replies
   • 1k views
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   • PhysicsBurger
   • February 5, 2012

5. Simple question

   By akash shrestha, January 12, 2012
   • 10 replies
   • 2k views
   • 
   • mathematic
   • February 5, 2012

6. trying to understand gas cloud collapse ?

   By Widdekind, January 25, 2012
   • 3 replies
   • 1.7k views
   • 
   • ajb
   • February 4, 2012

7. matter antimatter asymmetry ??

   By Widdekind, January 14, 2012
   • 5 replies
   • 1.7k views
   • 
   • Widdekind
   • February 2, 2012

8. Where does the moon rise?

   By Primarygun, July 25, 2007
   • 17 replies
   • 94.3k views
   • 
   • D H
   • January 30, 2012

9. What Imbues the Higgs Boson with its Mass?

   By G Anthony, December 23, 2011
   • 4 replies
   • 1.7k views
   • 
   • G Anthony
   • January 29, 2012

10. trying to understand Primordial Nucleosynthesis?

    By Widdekind, January 27, 2012
    • 2 replies
    • 2k views
    • 
    • G Anthony
    • January 29, 2012

11. Clearsky Reclamation Sciences Business Plan (yeah, right)

    By Realitycheck, January 27, 2012
    • 0 replies
    • 896 views
    • 
    • Realitycheck
    • January 27, 2012

12. can SMBH "squeeze stars" to explode ?

    By Widdekind, January 25, 2012
    • 0 replies
    • 936 views
    • 
    • Widdekind
    • January 25, 2012

13. Basic gravity questions

    By HeyNow, January 18, 2012
    • 5 replies
    • 4.1k views
    • 
    • Klaynos
    • January 25, 2012

14. Curvature caused by Photons too ? 1 2 3

    By Widdekind, January 3, 2011
    • 56 replies
    • 8.4k views
    • 
    • Widdekind
    • January 25, 2012

15. charge neutrality => matter / antimatter symmetry ?

    By Widdekind, January 22, 2012
    • 8 replies
    • 1.7k views
    • 
    • Airbrush
    • January 24, 2012

16. Rate and Location of Expansion 1 2 3 4

    By JustinW, January 2, 2012
    • 82 replies
    • 9.6k views
    • 
    • michel123456
    • January 21, 2012

17. Could black holes be quark stars?

    By 36grit, January 15, 2012
    • 5 replies
    • 2.2k views
    • 
    • questionposter
    • January 18, 2012

18. estimating galaxy ages from PNe ?

    By Widdekind, January 13, 2012
    • 1 reply
    • 1.2k views
    • 
    • pantheory
    • January 17, 2012

19. The drake equation. 1 2

    By dimreepr, January 12, 2012
    • 27 replies
    • 4.8k views
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    • Airbrush
    • January 17, 2012

20. Norbert Weiner statement on infromation

    By universeandmatter, January 17, 2012
    • 0 replies
    • 730 views
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    • universeandmatter
    • January 17, 2012

21. Expansion vs the speed of light.

    By Gozzer101, January 3, 2012
    • 3 replies
    • 1.3k views
    • 
    • Realitycheck
    • January 15, 2012

22. Which way is our galaxy moving and how fast?

    By Gozzer101, January 10, 2012
    • 14 replies
    • 2.9k views
    • 
    • DrRocket
    • January 15, 2012

23. Solar System formation

    By thomma, January 13, 2012
    • 1 reply
    • 798 views
    • 
    • Moontanman
    • January 13, 2012

24. wear and tear

    By Armor, January 12, 2012
    • 4 replies
    • 1.3k views
    • 
    • Armor
    • January 13, 2012

25. Practical Astronomy with your calculator

    By Ishtar, January 6, 2012
    • 1 reply
    • 1k views
    • 
    • Tres Juicy
    • January 12, 2012