Physics, Space Science and Theories

1,706 topics in this forum

1. Death by Supernova?

   By Skills, June 16, 2011
   • 24 replies
   • 2.6k views
   • 
   • Neilius
   • July 30, 2011

2. Why do galxies spiral? 1 2

   By mo wood, June 22, 2011
   • 26 replies
   • 2.8k views
   • 
   • toml42
   • July 30, 2011

3. Voyager, special relativity and the twin paradox

   By tom33pr, July 27, 2011
   • 5 replies
   • 1.5k views
   • 
   • Theinvoker
   • July 29, 2011

4. Jean's instabilities

   By Relativista, July 21, 2011
   • 2 replies
   • 832 views
   • 
   • Relativista
   • July 28, 2011

5. Why are :-

   By Essex Stargazer, July 26, 2011
   • 10 replies
   • 1k views
   • 
   • ollypenrice
   • July 26, 2011

6. Doppler's shift

   By Relativista, July 18, 2011
   • 4 replies
   • 852 views
   • 
   • Relativista
   • July 21, 2011

7. The Size Of The Universe?

   By Carbon Brush, July 16, 2011
   • 9 replies
   • 1.3k views
   • 
   • obscura
   • July 21, 2011

8. About binary star...

   By Relativista, July 18, 2011
   • 2 replies
   • 587 views
   • 
   • Relativista
   • July 18, 2011

9. weird space travel fact 1 2 3 4

   By turbotim, January 1, 2011
   • 81 replies
   • 6k views
   • 
   • peter shah
   • July 16, 2011

10. hidden dimensions

    By redgiantjohn, July 13, 2011
    • 5 replies
    • 916 views
    • 
    • redgiantjohn
    • July 16, 2011

11. The end of understanding? 1 2

    By ollypenrice, August 27, 2010
    • 37 replies
    • 2.5k views
    • 
    • Theinvoker
    • July 13, 2011

12. What is the/a Singularity

    By Ursa Major, June 18, 2011
    • 24 replies
    • 2k views
    • 
    • Staypuft
    • July 11, 2011

13. Rocketdyne RS-18 LEM Ascent Engine

    By blackparticle, June 25, 2011
    • 8 replies
    • 2.9k views
    • 
    • acey
    • July 11, 2011

14. Sunspots and global weather

    By rfdesigner, June 16, 2011
    • 9 replies
    • 880 views
    • 
    • rabbithutch
    • June 28, 2011

15. Black Hole Big Bang

    By Rich N, June 27, 2011
    • 1 reply
    • 683 views
    • 
    • George Jones
    • June 27, 2011

16. Type 1a supernovas are not all the same intrinsic brightness

    By mdstuart, June 23, 2011
    • 6 replies
    • 1.4k views
    • 
    • ollypenrice
    • June 24, 2011

17. Antikythera mechanism

    By meteoriot, June 23, 2011
    • 9 replies
    • 1.1k views
    • 
    • acey
    • June 24, 2011

18. superstring theory

    By redgiantjohn, June 22, 2011
    • 4 replies
    • 761 views
    • 
    • mag10
    • June 22, 2011

19. The Orion Nebula in a galaxy?

    By Porl, June 21, 2011
    • 17 replies
    • 2.2k views
    • 
    • ollypenrice
    • June 22, 2011

20. Globular clusters

    By Stu, June 15, 2011
    • 9 replies
    • 823 views
    • 
    • ollypenrice
    • June 16, 2011

21. Red atomsphere-less moon question

    By Ajax83, June 13, 2011
    • 11 replies
    • 1k views
    • 
    • Ajax83
    • June 15, 2011

22. Success on Antimatter

    By Karlos, June 6, 2011
    • 2 replies
    • 612 views
    • 
    • Karlos
    • June 13, 2011

23. Scale of the Universe

    By jimness, May 16, 2011
    • 19 replies
    • 3.5k views
    • 
    • Scosmico
    • June 12, 2011

24. Pioneer Anomaly

    By Telrad, June 10, 2011
    • 3 replies
    • 845 views
    • 
    • Telrad
    • June 10, 2011

25. Black holes and the Speed of light

    By Ursa Major, April 15, 2011
    • 11 replies
    • 1.6k views
    • 
    • JulianO
    • June 9, 2011