Astronomy and Cosmology

3705 topics in this forum

1. Eclipse and the Accelleration of the Earth ?

   By Bjarne, September 26, 2013
   • 13 replies
   • 1.5k views
   • 
   • swansont
   • December 31, 2013

2. multiple universe 1 2

   By simong, November 29, 2013
   • 45 replies
   • 4.8k views
   • 
   • Dekan
   • December 29, 2013

3. The structure of the Universe?

   By Гера�им, December 18, 2013
   • 5 replies
   • 1.3k views
   • 
   • ГераÑ�им
   • December 21, 2013

4. Dark Energy, Dark Matter and Antigravity

   By Done, November 23, 2013
   • 6 replies
   • 7.7k views
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   • hoola
   • December 19, 2013

5. Holographic Universe

   By marevangel, December 14, 2013
   • 5 replies
   • 1.9k views
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   • hoola
   • December 17, 2013

6. Typhoons and galaxies

   By Bart, November 24, 2013
   • 18 replies
   • 2.6k views
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   • Ophiolite
   • December 16, 2013

7. Space expansion & Virtual Particles

   By Simpleton, December 10, 2013
   • 5 replies
   • 1.5k views
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   • hoola
   • December 15, 2013

8. The Universe shouldn't expand infinitely?

   By Гера�им, November 10, 2013
   • 21 replies
   • 3.5k views
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   • Simpleton
   • December 10, 2013

9. ISON vs Voyager: Speed & Distance

   By skuzme210, December 3, 2013
   • 2 replies
   • 802 views
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   • skuzme210
   • December 3, 2013

10. Please help identify, possibly comet Ison

    By TahoeMagick, November 26, 2013
    • 2 replies
    • 968 views
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    • Delbert
    • December 3, 2013

11. fundamental or not

    By Ankit Gupta, November 22, 2013
    • 14 replies
    • 1.6k views
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    • swansont
    • November 28, 2013

12. Space Travel & Gravity Fields

    By GeeKay, November 21, 2013
    • 2 replies
    • 1k views
    • 
    • GeeKay
    • November 24, 2013

13. COMET Ison coming into view - reported Nov 23 Horizon BBC2

    By Mike Smith Cosmos, November 23, 2013
    • 5 replies
    • 1.6k views
    • 
    • Mike Smith Cosmos
    • November 24, 2013

14. Explanation of element line emission spectra.

    By howlingmadpanda, November 23, 2013
    • 0 replies
    • 1k views
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    • howlingmadpanda
    • November 23, 2013

15. Titan light

    By Gian, November 20, 2013
    • 3 replies
    • 1.3k views
    • 
    • Janus
    • November 22, 2013

16. Star Magnitude Query

    By GeeKay, November 7, 2013
    • 5 replies
    • 1.4k views
    • 
    • GeeKay
    • November 14, 2013

17. Dark Matter 1 2

    By IM Egdall, March 26, 2012
    • 33 replies
    • 7.4k views
    • 
    • antwis06
    • November 8, 2013

18. Space has no time. No beginning No end. 1 2 3

    By mattrsmith88, October 27, 2013
    • 56 replies
    • 13.5k views
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    • Endy0816
    • November 4, 2013

19. cosmic rays and the earths magnetosphere

    By petrushka.googol, November 2, 2013
    • 2 replies
    • 954 views
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    • Enthalpy
    • November 2, 2013

20. Help with Friedman equations and density of energy

    By Helpsearcher, October 29, 2013
    • 2 replies
    • 1.7k views
    • 
    • Helpsearcher
    • October 31, 2013

21. eccentricity of orbit

    By petrushka.googol, October 29, 2013
    • 5 replies
    • 2k views
    • 
    • Airbrush
    • October 31, 2013

22. Two comet system

    By petrushka.googol, October 29, 2013
    • 4 replies
    • 3.1k views
    • 
    • BusaDave9
    • October 30, 2013

23. About theories of gravity

    By spacecolonization.info, October 27, 2013
    • 4 replies
    • 1.2k views
    • 
    • spacecolonization.info
    • October 29, 2013

24. Are quasars made up of dark matter?

    By petrushka.googol, October 8, 2013
    • 12 replies
    • 2.6k views
    • 
    • ГераÑ�им
    • October 27, 2013

25. Limits of the Universe

    By petrushka.googol, October 19, 2013
    • 11 replies
    • 2k views
    • 
    • Airbrush
    • October 24, 2013