Astronomy and Cosmology

3685 topics in this forum

1. Trouble with Physics runaway bestseller after Smolin's Unique Universe appears

   By Martin, July 3, 2009
   • 3 replies
   • 1.6k views
   • 
   • hewj11
   • August 28, 2009

2. measuring God in Planck lengths

   By Rainman, August 27, 2009
   • 3 replies
   • 1.2k views
   • 
   • swansont
   • August 27, 2009

3. Planet X Hypothesis (from discovery of Neptune)

   By JcX, August 26, 2009
   • 7 replies
   • 4.2k views
   • 
   • JcX
   • August 26, 2009

4. The History Channel: The Universe (started tonight)

   By rrw4rusty, August 19, 2009
   • 9 replies
   • 1.7k views
   • 
   • Arch2008
   • August 21, 2009

5. Earth inching towards or away from sun?

   By Baby Astronaut, August 20, 2009
   • 10 replies
   • 2k views
   • 
   • mooeypoo
   • August 21, 2009

6. Navigating by our Big Dipper

   By Tolmosoff, June 18, 2009
   • 21 replies
   • 6.1k views
   • 
   • insane_alien
   • August 20, 2009

7. Multiple space telescopes inter-coordinated?

   By Baby Astronaut, August 16, 2009
   • 14 replies
   • 2.2k views
   • 
   • Baby Astronaut
   • August 20, 2009

8. infinitesolid2 on universal expansion.

   By infinitesolid2, August 15, 2009
   • 11 replies
   • 1.4k views
   • 
   • Klaynos
   • August 15, 2009

9. Amazing Deep Field Objects video with 3D distance rendering

   By padren, August 13, 2009
   • 6 replies
   • 1.2k views
   • 
   • Airbrush
   • August 14, 2009

10. First Jupitor now Saturn's rings getting hit???

    By Lightingbird, August 13, 2009
    • 2 replies
    • 1.6k views
    • 
    • DrP
    • August 13, 2009

11. what was there? 1 2

    By swaha, July 21, 2009
    • 42 replies
    • 5.4k views
    • 
    • rockman
    • August 12, 2009

12. Black hole size comparisons

    By Baby Astronaut, August 7, 2009
    • 6 replies
    • 1.1k views
    • 
    • Airbrush
    • August 11, 2009

13. WMAP and COBE

    By NiVekeN, August 4, 2009
    • 5 replies
    • 1.7k views
    • 
    • tar
    • August 8, 2009

14. A question about the big bang

    By The 321 Anomaly, July 21, 2009
    • 6 replies
    • 1.6k views
    • 
    • tar
    • August 8, 2009

15. Solar system motion relative to the Galaxy

    By earthist, August 6, 2009
    • 7 replies
    • 1.5k views
    • 
    • Tolmosoff
    • August 6, 2009

16. Does Universe expand?

    By NiVekeN, August 4, 2009
    • 23 replies
    • 2.7k views
    • 
    • Sisyphus
    • August 6, 2009

17. Just One Question?

    By Andromeda, August 5, 2009
    • 1 reply
    • 776 views
    • 
    • ajb
    • August 6, 2009

18. Please explain how some quasars are so remote

    By Alan McDougall, August 3, 2009
    • 5 replies
    • 1.2k views
    • 
    • Alan McDougall
    • August 4, 2009

19. Fantastic logarithmic scale diagram of the universe.

    By tar, August 2, 2009
    • 2 replies
    • 2.5k views
    • 
    • tar
    • August 2, 2009

20. How to detect habitable exomoons

    By Martin, July 25, 2009
    • 4 replies
    • 1.5k views
    • 
    • Sisyphus
    • July 30, 2009

21. Man to Moon? Mars? NEOs?

    By Airbrush, July 20, 2009
    • 7 replies
    • 1.8k views
    • 
    • djrams80
    • July 30, 2009

22. Solar Eclipse Video

    By Robin Hood, July 25, 2009
    • 0 replies
    • 826 views
    • 
    • Robin Hood
    • July 25, 2009

23. Human shuttles and speed (of light)

    By urbanleg, July 24, 2009
    • 7 replies
    • 1.2k views
    • 
    • D H
    • July 25, 2009

24. how can u say that the universe is expanding?

    By swaha, July 22, 2009
    • 10 replies
    • 1.3k views
    • 
    • One of the Few
    • July 24, 2009

25. My Theory About the Moon

    By CDizzle, July 21, 2009
    • 5 replies
    • 1.2k views
    • 
    • Mokele
    • July 24, 2009