Astronomy and Cosmology

3712 topics in this forum

1. Does gravity have an effective range?

   By pioneer, July 30, 2007
   • 13 replies
   • 14.3k views
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   • pioneer
   • August 19, 2007

2. The iron core of stars; super nova

   By pioneer, August 17, 2007
   • 5 replies
   • 2.2k views
   • 
   • pioneer
   • August 18, 2007

3. IS the universe flat?

   By fattyjwoods, August 9, 2007
   • 7 replies
   • 1.8k views
   • 
   • sammyooba
   • August 17, 2007

4. Black Hole=Worm

   By timology, July 28, 2007
   • 10 replies
   • 2.4k views
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   • shadowacct
   • August 16, 2007

5. Space Shuttle Atlantis Storm

   By Harry Deano, August 7, 2007
   • 16 replies
   • 1.6k views
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   • insane_alien
   • August 11, 2007

6. Scale drawing of the relative sizes of planets and moons in the solar system

   By hakanwar, August 6, 2007
   • 1 reply
   • 1.3k views
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   • markus.dnd
   • August 10, 2007

7. Nebula Pictures - True colors? Nope...

   By ParanoiA, August 10, 2007
   • 3 replies
   • 1.8k views
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   • insane_alien
   • August 10, 2007

8. Massive Galatic Collision!!!!

   By Dr. Spitzer, August 6, 2007
   • 3 replies
   • 1.2k views
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   • fattyjwoods
   • August 9, 2007

9. Exoplanet Formation Mystery

   By Giacomo, August 7, 2007
   • 2 replies
   • 1.2k views
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   • Martin
   • August 8, 2007

10. Largest planet in the Galaxy so far, TRES4

    By YT2095, August 7, 2007
    • 3 replies
    • 5.3k views
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    • YT2095
    • August 7, 2007

11. definition of a planet

    By dstebbins, August 5, 2007
    • 20 replies
    • 2.4k views
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    • Phi for All
    • August 6, 2007

12. Water on Exoplanets!!

    By Dr. Spitzer, July 30, 2007
    • 3 replies
    • 1.3k views
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    • h4tt3n
    • August 2, 2007

13. Reuter(Loops 07) no inflaton needed, no horizon problem

    By Martin, July 28, 2007
    • 9 replies
    • 1.7k views
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    • bascule
    • August 1, 2007

14. The Universe

    By Matt@eon8, July 23, 2007
    • 14 replies
    • 2k views
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    • Reaper
    • July 28, 2007

15. Creation of celestia out on the fringe

    By Realitycheck, July 18, 2007
    • 9 replies
    • 1.4k views
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    • lucaspa
    • July 23, 2007

16. Moon Orbit

    By Primarygun, July 20, 2007
    • 3 replies
    • 1.9k views
    • 
    • Primarygun
    • July 21, 2007

17. Lightning, thunder: Einstein's 'biggest blunder'?

    By KaiduOrkhon, July 20, 2007
    • 0 replies
    • 585 views
    • 
    • KaiduOrkhon
    • July 20, 2007

18. Questions about solar system dynamics etc.

    By SriDharma, July 20, 2007
    • 7 replies
    • 1.7k views
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    • grifter
    • July 20, 2007

19. Questions about fundamental astronomy

    By Primarygun, July 19, 2007
    • 1 reply
    • 1.2k views
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    • Jacques
    • July 19, 2007

20. Universal expansion acceleration

    By Jacques, July 18, 2007
    • 5 replies
    • 1.4k views
    • 
    • losfomot
    • July 19, 2007

21. Where are the scientists who share our values and goals

    By Dr.Salem, July 15, 2007
    • 2 replies
    • 1.2k views
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    • Country Boy
    • July 17, 2007

22. infinite density in black holes?

    By foofighter, July 8, 2007
    • 9 replies
    • 1.7k views
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    • foofighter
    • July 10, 2007

23. damaging space-time

    By foofighter, July 8, 2007
    • 13 replies
    • 1.8k views
    • 
    • foofighter
    • July 9, 2007

24. Bojowald in July Nature Physics, probing before bigbang with quantum cosmology

    By Martin, July 2, 2007
    • 10 replies
    • 2k views
    • 
    • Martin
    • July 6, 2007

25. A Neptune Mass Planet in the Oort Cloud

    By Astrobuff, June 30, 2007
    • 7 replies
    • 2.5k views
    • 
    • Ophiolite
    • July 5, 2007