Astronomy and Cosmology

3713 topics in this forum

1. Cause of the magnetic fields of the Earth?

   By alpha2cen, January 18, 2011
   • 13 replies
   • 2k views
   • 
   • alpha2cen
   • January 21, 2011

2. Does Galiosphere exist?-The Galaxy Heliosphere

   By alpha2cen, January 17, 2011
   • 0 replies
   • 712 views
   • 
   • alpha2cen
   • January 17, 2011

3. Q: re: simple Newtonian System-Mass estimator ?

   By Widdekind, January 16, 2011
   • 0 replies
   • 1.2k views
   • 
   • Widdekind
   • January 16, 2011

4. FOUND METEORITE

   By eelyeroc, January 12, 2011
   • 2 replies
   • 4.9k views
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   • Spyman
   • January 13, 2011

5. Does the Sun have an Orbit?

   By Equilibrium, January 11, 2011
   • 2 replies
   • 3.7k views
   • 
   • alpha2cen
   • January 12, 2011

6. Space/TIme

   By 36grit, December 15, 2010
   • 9 replies
   • 2k views
   • 
   • IM Egdall
   • January 11, 2011

7. planet orbit, the Earth?

   By alpha2cen, January 10, 2011
   • 0 replies
   • 712 views
   • 
   • alpha2cen
   • January 10, 2011

8. Reviving a Planet

   By nrocha20, September 30, 2009
   • 22 replies
   • 7.7k views
   • 
   • Taffer
   • January 9, 2011

9. The Speck

   By 36grit, January 6, 2011
   • 3 replies
   • 1.4k views
   • 
   • 36grit
   • January 8, 2011

10. The cause of the storm?

    By alpha2cen, January 6, 2011
    • 6 replies
    • 1.4k views
    • 
    • alpha2cen
    • January 7, 2011

11. Toward a 21st Century Cosmology

    By budrap, January 2, 2011
    • 2 replies
    • 1.4k views
    • 
    • imatfaal
    • January 6, 2011

12. Does expansion modify the properties of space?

    By zapatos, December 24, 2010
    • 19 replies
    • 3.3k views
    • 
    • swansont
    • January 5, 2011

13. Earth - Moon - Sun are in orbital resonance ??

    By Widdekind, December 7, 2010
    • 12 replies
    • 6.3k views
    • 
    • D H
    • January 4, 2011

14. Universe mass?

    By alpha2cen, December 28, 2010
    • 7 replies
    • 1.4k views
    • 
    • alpha2cen
    • January 4, 2011

15. The Galaxy gravity distributon?

    By alpha2cen, January 1, 2011
    • 4 replies
    • 877 views
    • 
    • alpha2cen
    • January 3, 2011

16. Ineffectiveness per minute, per hour

    By Airbrush, January 1, 2011
    • 1 reply
    • 802 views
    • 
    • swansont
    • January 1, 2011

17. Could Gravity Wave detectors "hear" cosmic collisions ?

    By Widdekind, December 30, 2010
    • 2 replies
    • 802 views
    • 
    • swansont
    • December 30, 2010

18. Electric discharge in the Universe?

    By alpha2cen, December 25, 2010
    • 1 reply
    • 693 views
    • 
    • alpha2cen
    • December 27, 2010

19. lunar eclipse and solstice

    By lemur, December 25, 2010
    • 1 reply
    • 720 views
    • 
    • Moontanman
    • December 25, 2010

20. What Powers Quasars?

    By Airbrush, December 3, 2010
    • 24 replies
    • 7.3k views
    • 
    • insane_alien
    • December 23, 2010

21. hollow disk of space

    By michel123456, December 14, 2010
    • 16 replies
    • 3.5k views
    • 
    • Spyman
    • December 20, 2010

22. a peculiar diagram

    By michel123456, December 15, 2010
    • 6 replies
    • 1.4k views
    • 
    • michel123456
    • December 18, 2010

23. Universe Expansion Diagram 1 2 3

    By losfomot, November 16, 2010
    • 52 replies
    • 10.6k views
    • 
    • michel123456
    • December 18, 2010

24. Kepler Orbit

    By h4tt3n, December 2, 2010
    • 12 replies
    • 3.4k views
    • 
    • D H
    • December 17, 2010

25. Escape Velocity from the Earth 1 2

    By toruk, December 11, 2010
    • 44 replies
    • 7.6k views
    • 
    • lemur
    • December 17, 2010