Astronomy and Cosmology

3714 topics in this forum

1. How Habitable Zones depend on Eccentricity

   By Widdekind, March 15, 2009
   • 15 replies
   • 2.1k views
   • 
   • Martin
   • March 20, 2009

2. Is there more to light than meets the eye ?

   By purintjp, March 19, 2009
   • 4 replies
   • 951 views
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   • swansont
   • March 19, 2009

3. Changes in Earths Axis

   By Xittenn, March 16, 2009
   • 2 replies
   • 925 views
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   • D H
   • March 17, 2009

4. Varied Planet composition

   By Vindhya, March 14, 2009
   • 2 replies
   • 1.2k views
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   • D H
   • March 14, 2009

5. Kepler Mission Webcast

   By kscvideos, March 6, 2009
   • 7 replies
   • 1.7k views
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   • mooeypoo
   • March 10, 2009

6. Quark, Lepton, Baryon, Atom, Etc

   By Airbrush, March 8, 2009
   • 3 replies
   • 1k views
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   • ydoaPs
   • March 8, 2009

7. Why are quasars point sources?

   By Airbrush, February 16, 2009
   • 8 replies
   • 1.9k views
   • 
   • Airbrush
   • March 8, 2009

8. New to Astronomy

   By Oracle, March 8, 2009
   • 4 replies
   • 1.4k views
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   • Oracle
   • March 8, 2009

9. time and space 1 2

   By jamey2k9, March 1, 2009
   • 28 replies
   • 3.4k views
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   • gre
   • March 7, 2009

10. Most Distant Object

    By Airbrush, February 25, 2009
    • 14 replies
    • 2.1k views
    • 
    • Martin
    • March 4, 2009

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

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

12. anti time

    By jamey2k9, February 19, 2009
    • 9 replies
    • 3.9k views
    • 
    • Airbrush
    • March 4, 2009

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

    By devrimci_kürt, February 28, 2009
    • 5 replies
    • 1.6k views
    • 
    • Martin
    • February 28, 2009

14. Colliding satellites

    By Jacques, February 12, 2009
    • 11 replies
    • 1.6k views
    • 
    • DrDNA
    • February 26, 2009

15. Plasma

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

16. The Known Universe

    By PrinceOfDragons, February 2, 2009
    • 4 replies
    • 1.1k views
    • 
    • hewj11
    • February 23, 2009

17. are protons manipulable?

    By cameron marical, February 15, 2009
    • 8 replies
    • 1.7k views
    • 
    • NowThatWeKnow
    • February 20, 2009

18. Venus...

    By Externet, February 20, 2009
    • 3 replies
    • 1k views
    • 
    • Sisyphus
    • February 20, 2009

19. Big Bang at t<0

    By Mr Skeptic, February 13, 2009
    • 10 replies
    • 1.7k views
    • 
    • Martin
    • February 19, 2009

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

    By jimmydasaint, February 14, 2009
    • 29 replies
    • 3.9k views
    • 
    • Primordial
    • February 17, 2009

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

    By sciencetoyboy, February 15, 2009
    • 7 replies
    • 2.1k views
    • 
    • NowThatWeKnow
    • February 15, 2009

22. does radiation get to the middle of asteroids?

    By cameron marical, February 14, 2009
    • 14 replies
    • 1.6k views
    • 
    • cameron marical
    • February 15, 2009

23. energy and big bang

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

24. scientist are still looking for zero temperature 1 2

    By boywonder, February 3, 2009
    • 36 replies
    • 4.3k views
    • 
    • swansont
    • February 13, 2009

25. Black hole jets imaged in submillimeter range

    By Martin, February 10, 2009
    • 2 replies
    • 1.2k views
    • 
    • Airbrush
    • February 12, 2009