Astronomy and Cosmology

3713 topics in this forum

1. Rotating cosmos

   By Moontanman, February 27, 2014
   • 3 replies
   • 1.2k views
   • 
   • Moontanman
   • February 28, 2014

2. What is constant alpha? 1 2

   By ccwebb, February 17, 2014
   • 29 replies
   • 5.8k views
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   • Strange
   • February 25, 2014

3. Is space a property of matter?

   By Hashirama_Senju, February 23, 2014
   • 4 replies
   • 1.3k views
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   • Strange
   • February 24, 2014

4. Quantum Entanglement Solar Flare Detection and Transmission 1 2 3 4

   By Addictive Science, December 28, 2013
   • 89 replies
   • 10k views
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   • Schneibster
   • February 22, 2014

5. How density is related to Gravity ??

   By Anand7sem, February 19, 2014
   • 5 replies
   • 1.3k views
   • 
   • Greg H.
   • February 19, 2014

6. How would the force of gravity differ in an Antimatter Universe?

   By Alan McDougall, January 27, 2014
   • 8 replies
   • 1.5k views
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   • Sensei
   • February 19, 2014

7. Why did the universe expand when it was small enough to be gravitationally bound?

   By Rolando, February 4, 2014
   • 6 replies
   • 2.1k views
   • 
   • Schneibster
   • February 18, 2014

8. Question: How is a gravitational singularity possible?

   By RadarArtillery, February 9, 2014
   • 12 replies
   • 2k views
   • 
   • hoola
   • February 12, 2014

9. Black holes emitting radiation

   By Mr. Healy, February 6, 2014
   • 13 replies
   • 2.1k views
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   • Implicate Order
   • February 9, 2014

10. Zones of backward time

    By petrushka.googol, January 22, 2014
    • 16 replies
    • 2.5k views
    • 
    • swansont
    • February 5, 2014

11. The Light Paradox

    By M_Broz, February 5, 2014
    • 2 replies
    • 1.2k views
    • 
    • ajb
    • February 5, 2014

12. photographing stars

    By qaopm, August 16, 2013
    • 9 replies
    • 2k views
    • 
    • BearOfNH
    • February 2, 2014

13. Why does the temperature of the core and sufrace of the sun differ so much?

    By yyh020635, January 26, 2014
    • 4 replies
    • 1.1k views
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    • Enthalpy
    • January 29, 2014

14. Where would we be without our moon?

    By ScienceLord, January 15, 2014
    • 14 replies
    • 2.7k views
    • 
    • doccortex
    • January 29, 2014

15. Drunk on Black Holes 1 2 3 4 5

    By decraig, November 20, 2013
    • 113 replies
    • 14.4k views
    • 
    • hypervalent_iodine
    • January 28, 2014

16. Free Astronomy/Science Info sources

    By Astronomy, January 26, 2014
    • 5 replies
    • 1.7k views
    • 
    • hypervalent_iodine
    • January 27, 2014

17. What is Trajectory Deflection Angle

    By Bjarne, January 26, 2014
    • 6 replies
    • 1.8k views
    • 
    • Bjarne
    • January 26, 2014

18. position & time from a picture of the sky. 1 2

    By michel123456, November 10, 2013
    • 28 replies
    • 6.1k views
    • 
    • michel123456
    • January 26, 2014

19. Black hole like simulation in a particle accelerator?

    By petrushka.googol, January 24, 2014
    • 3 replies
    • 1.2k views
    • 
    • Strange
    • January 26, 2014

20. Black holes gaining mass

    By Endercreeper01, January 4, 2014
    • 8 replies
    • 2.1k views
    • 
    • Strange
    • January 24, 2014

21. Your take on Antimatter and Our Universe?

    By Abhi_KS, December 26, 2013
    • 15 replies
    • 2.4k views
    • 
    • Jdaniel343
    • January 24, 2014

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

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

23. Rosetta probe...

    By Externet, January 21, 2014
    • 3 replies
    • 1.3k views
    • 
    • Enthalpy
    • January 22, 2014

24. Hubble looking at old galaxies

    By Jdaniel343, January 22, 2014
    • 2 replies
    • 980 views
    • 
    • Enthalpy
    • January 22, 2014

25. Expansion of the universe

    By azafran, January 21, 2014
    • 4 replies
    • 1.4k views
    • 
    • Spyman
    • January 21, 2014