Astronomy and Cosmology

3713 topics in this forum

1. Space-Time

   By *Marmite*, November 23, 2002
   • 23 replies
   • 4.1k views
   • 
   • Sirjon
   • June 8, 2009

2. How can quasars be so far away from earth?

   By Alan McDougall, June 6, 2009
   • 14 replies
   • 2.5k views
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   • Alan McDougall
   • June 8, 2009

3. Inflation theory and finite universe

   By honzik, June 2, 2009
   • 12 replies
   • 2.1k views
   • 
   • Martin
   • June 7, 2009

4. Space Travel harder in M-Class starsystems

   By Widdekind, May 2, 2009
   • 14 replies
   • 2k views
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   • SH3RL0CK
   • June 7, 2009

5. Open Clusters age into "Moving Groups"

   By Widdekind, June 7, 2009
   • 0 replies
   • 784 views
   • 
   • Widdekind
   • June 7, 2009

6. Why is our universe assymmetrical

   By Alan McDougall, June 6, 2009
   • 6 replies
   • 1.4k views
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   • Daecon
   • June 6, 2009

7. Concept of time

   By purintjp, June 3, 2009
   • 6 replies
   • 1.6k views
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   • Martin
   • June 4, 2009

8. Expansion, collapse, or both.

   By Piltdown man, May 29, 2009
   • 23 replies
   • 3.2k views
   • 
   • Martin
   • June 3, 2009

9. black holes

   By Avia, May 30, 2009
   • 8 replies
   • 1.5k views
   • 
   • Airbrush
   • June 3, 2009

10. The Unique Universe

    By Martin, June 2, 2009
    • 2 replies
    • 1k views
    • 
    • Martin
    • June 3, 2009

11. Predicting our Universe, past & present

    By Widdekind, June 3, 2009
    • 1 reply
    • 878 views
    • 
    • Martin
    • June 3, 2009

12. Is it possible space was not always expanding but is oscillating?

    By BigMoosie, April 2, 2009
    • 5 replies
    • 1.6k views
    • 
    • Martin
    • May 30, 2009

13. Is it all true

    By jakelee27, May 27, 2009
    • 12 replies
    • 2k views
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    • Sisyphus
    • May 30, 2009

14. Spacecraft-Asteroid collision

    By ScienceFighter, May 30, 2009
    • 2 replies
    • 771 views
    • 
    • Phi for All
    • May 30, 2009

15. a baby in space? 1 2

    By devrimci_kürt, March 29, 2009
    • 27 replies
    • 4.8k views
    • 
    • J.C.MacSwell
    • May 29, 2009

16. ETs Within 1,000 Light Years?

    By Airbrush, May 25, 2009
    • 20 replies
    • 3.1k views
    • 
    • Martin
    • May 29, 2009

17. Expansion of Space vs Movement in Space 1 2

    By NowThatWeKnow, May 10, 2009
    • 31 replies
    • 4.3k views
    • 
    • Martin
    • May 26, 2009

18. seeing the big bang

    By jamey2k9, May 20, 2009
    • 12 replies
    • 2k views
    • 
    • CygnusX1
    • May 25, 2009

19. Size of universe

    By person, May 25, 2009
    • 1 reply
    • 1k views
    • 
    • Klaynos
    • May 25, 2009

20. Radio Pulsar / X-ray Binary Link

    By Widdekind, May 24, 2009
    • 1 reply
    • 739 views
    • 
    • Martin
    • May 24, 2009

21. Globular Clusters are swallowed Galaxies

    By Widdekind, May 11, 2009
    • 4 replies
    • 1.2k views
    • 
    • Widdekind
    • May 24, 2009

22. More accurate distance mez for cosmology (SciAm item)

    By Martin, May 23, 2009
    • 0 replies
    • 825 views
    • 
    • Martin
    • May 23, 2009

23. Looking at the moon with the Hubble telescope

    By Captain_Blythe, May 21, 2009
    • 4 replies
    • 1.6k views
    • 
    • Janus
    • May 22, 2009

24. Age of the Universe question.

    By RaulDuke21, May 5, 2009
    • 22 replies
    • 3k views
    • 
    • Gag Me
    • May 20, 2009

25. Change in some basic parameters may be under way

    By Martin, May 15, 2009
    • 2 replies
    • 1.1k views
    • 
    • Arch2008
    • May 19, 2009