Astronomy and Cosmology

3685 topics in this forum

1. Varied Planet composition

   By Vindhya, March 14, 2009
   • 2 replies
   • 1.1k views
   • 
   • D H
   • March 14, 2009

2. Kepler Mission Webcast

   By kscvideos, March 6, 2009
   • 7 replies
   • 1.5k views
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   • mooeypoo
   • March 10, 2009

3. Quark, Lepton, Baryon, Atom, Etc

   By Airbrush, March 8, 2009
   • 3 replies
   • 941 views
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   • ydoaPs
   • March 8, 2009

4. Why are quasars point sources?

   By Airbrush, February 16, 2009
   • 8 replies
   • 1.7k views
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   • Airbrush
   • March 8, 2009

5. New to Astronomy

   By Oracle, March 8, 2009
   • 4 replies
   • 1.3k views
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   • Oracle
   • March 8, 2009

6. time and space 1 2

   By jamey2k9, March 1, 2009
   • 28 replies
   • 2.8k views
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   • gre
   • March 7, 2009

7. Most Distant Object

   By Airbrush, February 25, 2009
   • 14 replies
   • 1.8k views
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   • Martin
   • March 4, 2009

8. expanding universe. will it keep expanding, or "bounce back" the other way?

   By cameron marical, March 2, 2009
   • 13 replies
   • 1.8k views
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   • cameron marical
   • March 4, 2009

9. anti time

   By jamey2k9, February 19, 2009
   • 9 replies
   • 3.6k views
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   • Airbrush
   • March 4, 2009

10. is Dark Energy effect on the curvature of space time

    By devrimci_kürt, February 28, 2009
    • 5 replies
    • 1.4k views
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    • Martin
    • February 28, 2009

11. Colliding satellites

    By Jacques, February 12, 2009
    • 11 replies
    • 1.3k views
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    • DrDNA
    • February 26, 2009

12. Plasma

    By Peron, February 25, 2009
    • 3 replies
    • 795 views
    • 
    • swansont
    • February 25, 2009

13. The Known Universe

    By PrinceOfDragons, February 2, 2009
    • 4 replies
    • 969 views
    • 
    • hewj11
    • February 23, 2009

14. are protons manipulable?

    By cameron marical, February 15, 2009
    • 8 replies
    • 1.5k views
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    • NowThatWeKnow
    • February 20, 2009

15. Venus...

    By Externet, February 20, 2009
    • 3 replies
    • 910 views
    • 
    • Sisyphus
    • February 20, 2009

16. Big Bang at t<0

    By Mr Skeptic, February 13, 2009
    • 10 replies
    • 1.4k views
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    • Martin
    • February 19, 2009

17. What's in a Black Hole - Can't We Find Out? 1 2

    By jimmydasaint, February 14, 2009
    • 29 replies
    • 3.3k views
    • 
    • Primordial
    • February 17, 2009

18. could distant galaxies be moving faster than lightspeed relative to each other?

    By sciencetoyboy, February 15, 2009
    • 7 replies
    • 1.8k views
    • 
    • NowThatWeKnow
    • February 15, 2009

19. does radiation get to the middle of asteroids?

    By cameron marical, February 14, 2009
    • 14 replies
    • 1.3k views
    • 
    • cameron marical
    • February 15, 2009

20. energy and big bang

    By devrimci_kürt, February 13, 2009
    • 4 replies
    • 835 views
    • 
    • swansont
    • February 13, 2009

21. scientist are still looking for zero temperature 1 2

    By boywonder, February 3, 2009
    • 36 replies
    • 3.5k views
    • 
    • swansont
    • February 13, 2009

22. Black hole jets imaged in submillimeter range

    By Martin, February 10, 2009
    • 2 replies
    • 1.1k views
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    • Airbrush
    • February 12, 2009

23. what is a black hole?

    By jamey2k9, February 8, 2009
    • 15 replies
    • 2k views
    • 
    • Klaynos
    • February 11, 2009

24. Underwater training for astronauts

    By khanna.rajeev90, February 6, 2009
    • 6 replies
    • 1.1k views
    • 
    • poonam.jain
    • February 9, 2009

25. blue shift galaxies

    By jeff Mitchel, February 5, 2009
    • 5 replies
    • 1.8k views
    • 
    • jeff Mitchel
    • February 6, 2009