Astronomy and Cosmology

3705 topics in this forum

1. do galaxies orbit

   By jamey2k9, January 29, 2009
   • 5 replies
   • 3.6k views
   • 
   • Martin
   • January 30, 2009

2. How many stars do dwarf galaxies have?

   By seriously disabled, December 31, 2008
   • 6 replies
   • 3.3k views
   • 
   • NowThatWeKnow
   • January 29, 2009

3. Frozen earth

   By devrimci_kürt, January 29, 2009
   • 4 replies
   • 1.1k views
   • 
   • scrappy
   • January 29, 2009

4. Black Hole collapse

   By bored_teen, January 21, 2009
   • 17 replies
   • 2k views
   • 
   • Royston
   • January 29, 2009

5. Toy model space that is not expanding into

   By Martin, January 25, 2009
   • 7 replies
   • 1.5k views
   • 
   • NowThatWeKnow
   • January 27, 2009

6. Hot Jupiters.

   By Gareth56, January 16, 2009
   • 11 replies
   • 1.8k views
   • 
   • NowThatWeKnow
   • January 25, 2009

7. 365 Days Of Astronomy.

   By interstellar, January 22, 2009
   • 0 replies
   • 857 views
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   • interstellar
   • January 22, 2009

8. What would proving there's life on Mars do for science? 1 2

   By CrazCo, January 16, 2009
   • 36 replies
   • 4.4k views
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   • Baby Astronaut
   • January 22, 2009

9. blackholes

   By Inquisitive Stone, January 17, 2009
   • 2 replies
   • 1.1k views
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   • Ugouka
   • January 22, 2009

10. Where was the supernova that created the Solar System? 1 2

    By Reaper, January 7, 2009
    • 37 replies
    • 4.9k views
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    • CaptainPanic
    • January 21, 2009

11. solar wind/jovian wind?

    By granpa, January 15, 2009
    • 15 replies
    • 1.9k views
    • 
    • CaptainPanic
    • January 21, 2009

12. galaxies receeding at the speed of light

    By johan01, January 20, 2009
    • 4 replies
    • 1.2k views
    • 
    • NowThatWeKnow
    • January 21, 2009

13. an unsolveble question?

    By jamey2k9, January 19, 2009
    • 4 replies
    • 930 views
    • 
    • petebro
    • January 20, 2009

14. observable and visible

    By devrimci_kürt, January 17, 2009
    • 7 replies
    • 1.4k views
    • 
    • swansont
    • January 18, 2009

15. Life on Mars?

    By igosaur, January 15, 2009
    • 7 replies
    • 1.5k views
    • 
    • devrimci_kürt
    • January 16, 2009

16. Is universe expanding?

    By Dark_anzel, January 15, 2009
    • 3 replies
    • 1k views
    • 
    • Klaynos
    • January 15, 2009

17. is the universe unbounded?

    By devrimci_kürt, January 14, 2009
    • 3 replies
    • 1.6k views
    • 
    • Martin
    • January 15, 2009

18. Galaxy Photography

    By Chase, December 30, 2008
    • 2 replies
    • 1k views
    • 
    • jayray
    • January 14, 2009

19. big-bang fundamental problem

    By north, December 15, 2008
    • 16 replies
    • 2k views
    • 
    • swansont
    • January 13, 2009

20. Could the big bang have been the start of a black hole?

    By Lightingbird, January 7, 2009
    • 4 replies
    • 1.2k views
    • 
    • Martin
    • January 12, 2009

21. Furthest redshift possible?

    By Baby Astronaut, September 14, 2008
    • 17 replies
    • 2.1k views
    • 
    • Martin
    • January 10, 2009

22. Mapping the universe in "real time"? 1 2 3

    By Baby Astronaut, January 1, 2009
    • 51 replies
    • 6.7k views
    • 
    • Klaynos
    • January 9, 2009

23. New Observations on Dark Energy

    By Darkpassenger, December 22, 2008
    • 9 replies
    • 1.9k views
    • 
    • Royston
    • January 7, 2009

24. space-time:fabric, foam, or what?

    By tomc, December 5, 2008
    • 23 replies
    • 3.4k views
    • 
    • NowThatWeKnow
    • January 7, 2009

25. Reading Komatsu, getting over a few notation hurdles

    By Martin, January 6, 2009
    • 0 replies
    • 810 views
    • 
    • Martin
    • January 6, 2009