Astronomy and Cosmology

3713 topics in this forum

1. Definitions

   By uncool, June 17, 2012
   • 2 replies
   • 1.1k views
   • 
   • J.C.MacSwell
   • June 17, 2012

2. Comet viewing

   By xtheunknown0, June 16, 2012
   • 1 reply
   • 805 views
   • 
   • Ophiolite
   • June 16, 2012

3. Dark Matter

   By David Levy, June 5, 2012
   • 2 replies
   • 1.2k views
   • 
   • Spyman
   • June 14, 2012

4. Any empty vacuum space light can not travel in the Universe? 1 2

   By alpha2cen, June 2, 2012
   • 32 replies
   • 3.5k views
   • 
   • alpha2cen
   • June 14, 2012

5. A definition of time 1 2

   By Greg H., June 4, 2012
   • 27 replies
   • 4k views
   • 
   • alpha2cen
   • June 11, 2012

6. Ingredients of cosmos

   By dmg, May 28, 2012
   • 24 replies
   • 2.9k views
   • 
   • dmg
   • June 8, 2012

7. A question by a layman in astrophysics.

   By NoName, June 6, 2012
   • 4 replies
   • 1.5k views
   • 
   • Airbrush
   • June 7, 2012

8. Observe the Venus Transit!

   By BSC, May 7, 2012
   • 13 replies
   • 2.7k views
   • 
   • Airbrush
   • June 6, 2012

9. Are there habitable planets/moons in our solar system? 1 2

   By Jonathanaronda, April 26, 2012
   • 29 replies
   • 9.8k views
   • 
   • pantheory
   • June 6, 2012

10. Let's talk universe

    By santoperdido, June 1, 2012
    • 6 replies
    • 1.3k views
    • 
    • Airbrush
    • June 5, 2012

11. Solar system - birth

    By David Levy, June 3, 2012
    • 10 replies
    • 1.9k views
    • 
    • Airbrush
    • June 4, 2012

12. Worm holes

    By TransformerRobot, May 27, 2012
    • 23 replies
    • 3.8k views
    • 
    • Nigel
    • June 3, 2012

13. dark magnetism

    By space noob, June 1, 2012
    • 1 reply
    • 1.7k views
    • 
    • ACG52
    • June 1, 2012

14. does anyone know how I can place images on this forum of models I have to show?

    By The Architekt, May 29, 2012
    • 7 replies
    • 1.4k views
    • 
    • Joatmon
    • May 29, 2012

15. Star movment direction in an active galaxy

    By David Levy, May 27, 2012
    • 16 replies
    • 1.9k views
    • 
    • ACG52
    • May 29, 2012

16. Is the Universe Spinning?

    By murshid, February 27, 2012
    • 19 replies
    • 4.5k views
    • 
    • Alberto
    • May 26, 2012

17. Books on black holes?

    By moonjelly<3, March 9, 2012
    • 7 replies
    • 1.8k views
    • 
    • Spyman
    • May 25, 2012

18. New planets forming elsewhere

    By TransformerRobot, May 23, 2012
    • 6 replies
    • 1.8k views
    • 
    • Airbrush
    • May 23, 2012

19. Supernovae and time

    By ydoaPs, May 17, 2012
    • 6 replies
    • 1.8k views
    • 
    • ydoaPs
    • May 20, 2012

20. end of a neutron stars life?

    By space noob, May 19, 2012
    • 3 replies
    • 5k views
    • 
    • insane_alien
    • May 20, 2012

21. string theory

    By space noob, May 15, 2012
    • 8 replies
    • 2k views
    • 
    • MigL
    • May 20, 2012

22. Black holes in a Big Bang Universe? 1 2 3

    By Rolando, May 15, 2012
    • 60 replies
    • 6.1k views
    • 
    • space noob
    • May 19, 2012

23. Dark Energy vs Fifth Force

    By IM Egdall, May 14, 2012
    • 5 replies
    • 1.8k views
    • 
    • space noob
    • May 16, 2012

24. interesting idea but is it a accomplishable

    By space noob, May 15, 2012
    • 6 replies
    • 1.8k views
    • 
    • Airbrush
    • May 16, 2012

25. hypervelocity star mass

    By space noob, May 8, 2012
    • 22 replies
    • 3.7k views
    • 
    • Airbrush
    • May 16, 2012