Astronomy and Cosmology

3705 topics in this forum

1. Concerted response to the most common cosmo confusions

   By Martin, May 6, 2009
   • 18 replies
   • 2.2k views
   • 
   • jackson33
   • May 10, 2009

2. Entropy and Expansion

   By Eric0728, May 10, 2009
   • 0 replies
   • 668 views
   • 
   • Eric0728
   • May 10, 2009

3. Science Comedian Riffs on Hydrogen and Helium

   By sciencecomedian, May 9, 2009
   • 0 replies
   • 676 views
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   • sciencecomedian
   • May 9, 2009

4. The stars....

   By Improvision, April 29, 2009
   • 8 replies
   • 1.6k views
   • 
   • Martin
   • May 7, 2009

5. Your Top 3 Fermi Paradox Solutions 1 2

   By Luminal, July 13, 2007
   • 27 replies
   • 4.4k views
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   • h4tt3n
   • May 6, 2009

6. Black Hole time travel?

   By Inquisitor, April 2, 2009
   • 11 replies
   • 2.1k views
   • 
   • froarty
   • May 5, 2009

7. Planet sailing through the cosmos very fast?

   By Baby Astronaut, April 23, 2009
   • 6 replies
   • 1.4k views
   • 
   • Baby Astronaut
   • May 4, 2009

8. Questions on zero-point energy

   By Simpleton, May 2, 2009
   • 4 replies
   • 1k views
   • 
   • Simpleton
   • May 3, 2009

9. can a black hole exist inside of another black hole? 1 2

   By noz92, August 8, 2004
   • 32 replies
   • 6.1k views
   • 
   • universe2009
   • May 1, 2009

10. Earth's Rotational Axis as Related to the Sun

    By SwampeastMike, April 28, 2009
    • 7 replies
    • 1.5k views
    • 
    • J.C.MacSwell
    • April 30, 2009

11. Birth of Galaxies Theory

    By norefillsx, April 28, 2009
    • 1 reply
    • 816 views
    • 
    • jackson33
    • April 29, 2009

12. 13 billion year old GRB

    By Arch2008, April 28, 2009
    • 19 replies
    • 2.4k views
    • 
    • Martin
    • April 29, 2009

13. Dummies Advocate

    By AO2012, April 19, 2009
    • 15 replies
    • 1.7k views
    • 
    • GDG
    • April 29, 2009

14. Randomness or Decisive?

    By norefillsx, April 28, 2009
    • 3 replies
    • 938 views
    • 
    • norefillsx
    • April 28, 2009

15. Just how fast and unexpected life could end

    By norefillsx, April 28, 2009
    • 2 replies
    • 803 views
    • 
    • norefillsx
    • April 28, 2009

16. Most Likely Ending

    By antimatter, April 2, 2009
    • 24 replies
    • 3.9k views
    • 
    • Airbrush
    • April 27, 2009

17. anti-matter

    By jamey2k9, April 23, 2009
    • 4 replies
    • 1.2k views
    • 
    • swansont
    • April 24, 2009

18. Kepler mission and the HZ planet search

    By Martin, March 20, 2009
    • 8 replies
    • 1.8k views
    • 
    • Airbrush
    • April 23, 2009

19. What would SETI pick up from Earth's signals?

    By CaptainPanic, April 22, 2009
    • 2 replies
    • 947 views
    • 
    • Megabrain
    • April 22, 2009

20. Stephen Hawking, ill...

    By jackson33, April 20, 2009
    • 3 replies
    • 1.1k views
    • 
    • Megabrain
    • April 20, 2009

21. red giants

    By thedarkshade, April 17, 2009
    • 5 replies
    • 1.5k views
    • 
    • thedarkshade
    • April 20, 2009

22. light in two places at once

    By jamey2k9, April 15, 2009
    • 6 replies
    • 1.6k views
    • 
    • Kyrisch
    • April 19, 2009

23. What would happen if Earths magnetic field turned off?

    By Inquisitor, March 27, 2009
    • 23 replies
    • 11.3k views
    • 
    • rebelion
    • April 19, 2009

24. Is LIGO just observing viscosity of the vacuum?

    By Duda Jarek, April 19, 2009
    • 0 replies
    • 851 views
    • 
    • Duda Jarek
    • April 19, 2009

25. expansion

    By jjuris, April 17, 2009
    • 2 replies
    • 934 views
    • 
    • Martin
    • April 18, 2009