Astronomy and Cosmology

3688 topics in this forum

1. SNII create Deuterium?

   By Widdekind, November 30, 2012
   • 1 reply
   • 838 views
   • 
   • John Cuthber
   • December 1, 2012

2. Octopole and Quadrupole planes w.r.t. CMBR?

   By cohen990, December 13, 2012
   • 1 reply
   • 818 views
   • 
   • ajb
   • December 15, 2012

3. Apparent lack of expansion of the universe

   By Jdizz, December 31, 2012
   • 1 reply
   • 1.6k views
   • 
   • swansont
   • December 31, 2012

4. The luminosity distance and supernovae data

   By cosmos0, January 20, 2013
   • 1 reply
   • 1.3k views
   • 
   • alpha2cen
   • January 20, 2013

5. whats gonna happen?

   By dripto biswas, February 14, 2013
   • 1 reply
   • 722 views
   • 
   • pwagen
   • February 14, 2013

6. Russian Meteor Impact 2-15-13

   By Airbrush, February 21, 2013
   • 1 reply
   • 808 views
   • 
   • hypervalent_iodine
   • February 21, 2013

7. Inflation: expansion faster then the speed of light??

   By JustCurious?!, March 22, 2013
   • 1 reply
   • 1.1k views
   • 
   • ajb
   • March 22, 2013

8. Question about M-theory and the big bang

   By cassanda_complex, April 4, 2013
   • 1 reply
   • 923 views
   • 
   • Arch2008
   • April 4, 2013

9. VY Canis Majoris vs The Sun? Question

   By Fanghur, April 4, 2013
   • 1 reply
   • 2.5k views
   • 
   • Chrispen Evan
   • April 4, 2013

10. The Universe was always the same size?

    By Banshii, April 5, 2013
    • 1 reply
    • 913 views
    • 
    • Iggy
    • April 7, 2013

11. IceCube detects its first 28 neutrinos

    By Enthalpy, May 15, 2013
    • 1 reply
    • 929 views
    • 
    • Airbrush
    • May 18, 2013

12. Universes Density

    By ShaneJ, June 5, 2013
    • 1 reply
    • 968 views
    • 
    • Royston
    • June 6, 2013

13. Transference of circular motion of black hole?

    By SamBridge, June 12, 2013
    • 1 reply
    • 993 views
    • 
    • MigL
    • June 16, 2013

14. radio-ray bursters ??

    By Widdekind, July 13, 2013
    • 1 reply
    • 1.4k views
    • 
    • EdEarl
    • July 14, 2013

15. The Truth About Geometric Unity

    By sevensixtwo, August 18, 2013
    • 1 reply
    • 1.1k views
    • 
    • imatfaal
    • August 19, 2013

16. Where are the rings?

    By ccwebb, August 23, 2013
    • 1 reply
    • 1.5k views
    • 
    • Moontanman
    • August 23, 2013

17. Sun's Life-cycle Questions

    By Z07, September 3, 2013
    • 1 reply
    • 995 views
    • 
    • mathematic
    • September 3, 2013

18. Inertia forces in the rotating frame (then rotation rate depends on the radius)

    By valwebnik, September 5, 2013
    • 1 reply
    • 686 views
    • 
    • swansont
    • September 5, 2013

19. Did the universe have a beginning?

    By petrushka.googol, October 6, 2013
    • 1 reply
    • 927 views
    • 
    • Airbrush
    • October 6, 2013

20. What is the order of magnitude of the mass of photons?

    By petrushka.googol, October 7, 2013
    • 1 reply
    • 858 views
    • 
    • swansont
    • October 7, 2013

21. How realistically can we describe the early history of our universe?

    By petrushka.googol, January 23, 2014
    • 1 reply
    • 735 views
    • 
    • Strange
    • January 23, 2014

22. Dark Matter mystery solved.

    By Cosmobrain, March 5, 2014
    • 1 reply
    • 746 views
    • 
    • swansont
    • March 5, 2014

23. Gravity Waves Discovered

    By Airbrush, March 18, 2014
    • 1 reply
    • 843 views
    • 
    • StringJunky
    • March 18, 2014

24. Orbital Decay

    By SaganWannaBeWannaBe, April 14, 2014
    • 1 reply
    • 825 views
    • 
    • swansont
    • April 14, 2014

25. Astronomers Create First Realistic Virtual Universe

    By Mordred, May 7, 2014
    • 1 reply
    • 1k views
    • 
    • Mordred
    • May 8, 2014