Astronomy and Cosmology

3713 topics in this forum

1. A different view of dimensions.

   By Yash, March 20, 2013
   • 0 replies
   • 1.5k views
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   • Yash
   • March 20, 2013

2. Possibility of not having a singularity? 1 2

   By Sato, March 9, 2013
   • 25 replies
   • 3.6k views
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   • SplitInfinity
   • March 20, 2013

3. Is the universe collapsing. 1 2

   By derek w, March 14, 2013
   • 25 replies
   • 4.1k views
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   • SplitInfinity
   • March 20, 2013

4. The Universe sprang out of Nothing

   By Gian, February 28, 2013
   • 7 replies
   • 2.2k views
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   • siderman
   • March 19, 2013

5. What happens when the light from the center of the universe catches up with us?

   By Sean Bodey, March 7, 2013
   • 6 replies
   • 1.8k views
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   • Chrispen Evan
   • March 14, 2013

6. Terra forming Moons in our solar system

   By Kleeklor, March 12, 2013
   • 2 replies
   • 1k views
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   • pwagen
   • March 12, 2013

7. What would a neutron star look like?

   By Fanghur, March 10, 2013
   • 4 replies
   • 1.6k views
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   • StringJunky
   • March 11, 2013

8. The Final Frontier: Achievable in high school?

   By tibieuh, March 6, 2013
   • 8 replies
   • 1.6k views
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   • BearOfNH
   • March 11, 2013

9. How can galaxies exist with the expansion of space? 1 2 3 4

   By Lazarus, February 3, 2013
   • 95 replies
   • 10.5k views
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   • Lazarus
   • March 10, 2013

10. Seeing Black Holes

    By Airbrush, March 1, 2013
    • 4 replies
    • 1.6k views
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    • Chrispen Evan
    • March 9, 2013

11. Hypervelocity Black Holes?

    By Airbrush, March 6, 2013
    • 2 replies
    • 2k views
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    • 36grit
    • March 8, 2013

12. Passing Stars

    By BearOfNH, February 28, 2013
    • 6 replies
    • 2.4k views
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    • Spyman
    • March 6, 2013

13. photogenic coincidence?

    By michel123456, February 25, 2013
    • 3 replies
    • 1.5k views
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    • swansont
    • March 4, 2013

14. How big is the universe? 1 2

    By adam SA, February 5, 2010
    • 25 replies
    • 5.8k views
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    • iNow
    • March 3, 2013

15. define "universe"

    By 36grit, March 2, 2013
    • 3 replies
    • 1.1k views
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    • Klaynos
    • March 2, 2013

16. question about the quantum fluctuation theory of the Big Bang

    By gib65, February 21, 2013
    • 3 replies
    • 1.1k views
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    • timo
    • March 2, 2013

17. Moon Size Increased Question

    By redshift1100, February 24, 2013
    • 2 replies
    • 908 views
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    • redshift1100
    • February 25, 2013

18. There goes the universe.

    By Arch2008, February 19, 2013
    • 9 replies
    • 1.8k views
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    • SamBridge
    • February 23, 2013

19. dark energy (not so) obviously

    By alexro, February 18, 2013
    • 16 replies
    • 2k views
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    • ACG52
    • February 23, 2013

20. Artificial Gravity on Spacestation

    By Airbrush, February 19, 2013
    • 7 replies
    • 1.5k views
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    • ARMF
    • February 21, 2013

21. black suction theory

    By Ankit Gupta, February 21, 2013
    • 0 replies
    • 970 views
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    • Ankit Gupta
    • February 21, 2013

22. CDMS (cryogenic dark matter search)

    By ARMF, February 21, 2013
    • 0 replies
    • 911 views
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    • ARMF
    • February 21, 2013

23. Russian Meteor Impact 2-15-13

    By Airbrush, February 21, 2013
    • 1 reply
    • 884 views
    • 
    • hypervalent_iodine
    • February 21, 2013

24. Dark Matter vs. Alternative Theories

    By suburban, February 20, 2013
    • 3 replies
    • 2.2k views
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    • suburban
    • February 20, 2013

25. Dark energy & Expanding Universe

    By 25Hz, May 28, 2012
    • 4 replies
    • 1.5k views
    • 
    • Spyman
    • February 20, 2013