Astronomy and Cosmology

3712 topics in this forum

1. fusion in galaxy coronae ?

   By Widdekind, June 27, 2013
   • 2 replies
   • 1k views
   • 
   • Widdekind
   • July 3, 2013

2. How to work out the radius and diameter of the universe?

   By ShaneJ, June 4, 2013
   • 9 replies
   • 2.1k views
   • 
   • Delbert
   • July 2, 2013

3. How thick is our spiral arm?

   By Airbrush, June 25, 2013
   • 16 replies
   • 7.1k views
   • 
   • StringJunky
   • June 28, 2013

4. Shape of Universe 1 2

   By efanton, May 9, 2013
   • 35 replies
   • 5k views
   • 
   • BrightQuark
   • June 27, 2013

5. How did we find the location of the Big Bang?

   By BrightQuark, June 25, 2013
   • 24 replies
   • 2.3k views
   • 
   • BrightQuark
   • June 27, 2013

6. Leonard Susskind on the World as a Hologram

   By BrightQuark, June 26, 2013
   • 2 replies
   • 1.7k views
   • 
   • BrightQuark
   • June 26, 2013

7. Gauss' Law for spherical shell vs Coulomb's law, regarding reativity

   By Ammah, June 25, 2013
   • 4 replies
   • 1.3k views
   • 
   • timo
   • June 26, 2013

8. Critical inflation

   By joshthagreat, June 21, 2013
   • 3 replies
   • 991 views
   • 
   • ajb
   • June 24, 2013

9. Fast recalculation of gravity equipotential lines after Planet explosion

   By webaba, June 23, 2013
   • 0 replies
   • 652 views
   • 
   • webaba
   • June 23, 2013

10. "Surface Tides" (re Xaonon Calculator)

    By GeeKay, June 16, 2013
    • 4 replies
    • 1.3k views
    • 
    • imatfaal
    • June 20, 2013

11. The Electric Comet – A Documentary

    By Michael Suede, June 19, 2013
    • 0 replies
    • 889 views
    • 
    • Michael Suede
    • June 19, 2013

12. Micro-Black Holes

    By GeeKay, June 10, 2013
    • 10 replies
    • 1.6k views
    • 
    • Airbrush
    • June 18, 2013

13. observation & intuition VS science

    By jimmyjammy, June 16, 2013
    • 2 replies
    • 1.1k views
    • 
    • Airbrush
    • June 18, 2013

14. our galaxy

    By lukemcleod, June 14, 2013
    • 8 replies
    • 1.7k views
    • 
    • Airbrush
    • June 18, 2013

15. The 'New Physics' Model of Dark Energy Nixed

    By EdEarl, June 18, 2013
    • 2 replies
    • 1.1k views
    • 
    • swansont
    • June 18, 2013

16. Transference of circular motion of black hole?

    By SamBridge, June 12, 2013
    • 1 reply
    • 1.1k views
    • 
    • MigL
    • June 16, 2013

17. How do you define orbital shape parameters?

    By SamBridge, June 13, 2013
    • 8 replies
    • 1.2k views
    • 
    • D H
    • June 14, 2013

18. Universes Density

    By ShaneJ, June 5, 2013
    • 1 reply
    • 1.1k views
    • 
    • Royston
    • June 6, 2013

19. Velocity of light is increasing with the age of the UNIVERSE?Any experimental support?

    By Siva Prasad Kodukula, May 19, 2013
    • 9 replies
    • 1.7k views
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    • Chrispen Evan
    • May 23, 2013

20. Why Mars has no Plate Tectonics ?

    By Widdekind, May 14, 2009
    • 22 replies
    • 8.4k views
    • 
    • Widdekind
    • May 20, 2013

21. Some black hole questions, I think I brain is broken.

    By Hoki, May 10, 2013
    • 6 replies
    • 1.6k views
    • 
    • ajb
    • May 20, 2013

22. Why doesn't the space curvature restore the path of a photon?

    By Lazarus, May 14, 2013
    • 17 replies
    • 2.1k views
    • 
    • Lazarus
    • May 19, 2013

23. IceCube detects its first 28 neutrinos

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

24. Big Bang question(s)

    By Dekan, April 29, 2013
    • 22 replies
    • 3.1k views
    • 
    • imatfaal
    • May 15, 2013

25. Questions about molten rock in space.

    By too-open-minded, May 15, 2013
    • 6 replies
    • 2.2k views
    • 
    • Iggy
    • May 15, 2013