Astronomy and Cosmology

3705 topics in this forum

1. Light properties in curved space

   By purintjp, July 16, 2009
   • 8 replies
   • 1.5k views
   • 
   • purintjp
   • July 20, 2009

2. have we ever seen a galaxy or star form

   By AlphaBeta, June 27, 2009
   • 16 replies
   • 9.7k views
   • 
   • Blue Fire
   • July 20, 2009

3. Sky Server

   By PhysicsGroupie, July 14, 2009
   • 0 replies
   • 750 views
   • 
   • PhysicsGroupie
   • July 14, 2009

4. Methane implies Biology ?? 1 2

   By Widdekind, May 31, 2009
   • 42 replies
   • 8.2k views
   • 
   • John Cuthber
   • July 13, 2009

5. Expanding universe versus galactic collision

   By buzzinfinity, July 9, 2009
   • 13 replies
   • 1.8k views
   • 
   • Royston
   • July 12, 2009

6. Nukes in space. 1 2

   By Leader Bee, July 7, 2009
   • 26 replies
   • 2.9k views
   • 
   • insane_alien
   • July 8, 2009

7. Elliptical Orbit- Why?

   By Theophrastus, July 6, 2009
   • 14 replies
   • 2k views
   • 
   • swansont
   • July 7, 2009

8. cosmic microwave confusion

   By inkliing, July 6, 2009
   • 0 replies
   • 799 views
   • 
   • inkliing
   • July 6, 2009

9. Expanding a singularity

   By pioneer, July 5, 2009
   • 2 replies
   • 1.1k views
   • 
   • Martin
   • July 5, 2009

10. Looking for some good books.

    By hewj11, June 25, 2009
    • 6 replies
    • 1.3k views
    • 
    • Airbrush
    • July 1, 2009

11. Six billion solar mass black hole in nearby Virgo cluster

    By Martin, June 9, 2009
    • 15 replies
    • 2.5k views
    • 
    • Martin
    • June 22, 2009

12. Chocolate in our Sky

    By Tolmosoff, June 18, 2009
    • 4 replies
    • 1.1k views
    • 
    • hewj11
    • June 21, 2009

13. Gravity Wells steal Energy & Mass ??

    By Widdekind, June 9, 2009
    • 7 replies
    • 1.4k views
    • 
    • Widdekind
    • June 19, 2009

14. Multiple Star Formation

    By VedekPako, June 10, 2009
    • 1 reply
    • 879 views
    • 
    • Ophiolite
    • June 12, 2009

15. Lunar impact:

    By Jacques, June 11, 2009
    • 0 replies
    • 715 views
    • 
    • Jacques
    • June 11, 2009

16. my Moon Pictures. 1 2

    By YT2095, October 12, 2008
    • 25 replies
    • 5.2k views
    • 
    • Syntho-sis
    • June 9, 2009

17. Sightings and Observation Database?

    By mooeypoo, June 6, 2009
    • 6 replies
    • 1k views
    • 
    • mooeypoo
    • June 8, 2009

18. Space-Time

    By *Marmite*, November 23, 2002
    • 23 replies
    • 3.8k views
    • 
    • Sirjon
    • June 8, 2009

19. How can quasars be so far away from earth?

    By Alan McDougall, June 6, 2009
    • 14 replies
    • 2.4k views
    • 
    • Alan McDougall
    • June 8, 2009

20. Inflation theory and finite universe

    By honzik, June 2, 2009
    • 12 replies
    • 1.9k views
    • 
    • Martin
    • June 7, 2009

21. Space Travel harder in M-Class starsystems

    By Widdekind, May 2, 2009
    • 14 replies
    • 1.9k views
    • 
    • SH3RL0CK
    • June 7, 2009

22. Open Clusters age into "Moving Groups"

    By Widdekind, June 7, 2009
    • 0 replies
    • 756 views
    • 
    • Widdekind
    • June 7, 2009

23. Why is our universe assymmetrical

    By Alan McDougall, June 6, 2009
    • 6 replies
    • 1.3k views
    • 
    • Daecon
    • June 6, 2009

24. Concept of time

    By purintjp, June 3, 2009
    • 6 replies
    • 1.5k views
    • 
    • Martin
    • June 4, 2009

25. Expansion, collapse, or both.

    By Piltdown man, May 29, 2009
    • 23 replies
    • 2.9k views
    • 
    • Martin
    • June 3, 2009