Astronomy and Cosmology

3705 topics in this forum

1. The Moving Universe

   By sfphysics, April 27, 2011
   • 5 replies
   • 1.4k views
   • 
   • Airbrush
   • April 27, 2011

2. Question about Planetary Formation

   By Widdekind, August 22, 2009
   • 14 replies
   • 2k views
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   • Ophiolite
   • April 27, 2011

3. Dark Energy

   By Advaithi, April 15, 2011
   • 6 replies
   • 1.9k views
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   • Spyman
   • April 26, 2011

4. SM BHs, Quasars, & Starburst galaxies

   By Widdekind, April 15, 2011
   • 2 replies
   • 1.5k views
   • 
   • Widdekind
   • April 24, 2011

5. estimating Europa's ice-crust thickness

   By Widdekind, April 17, 2011
   • 3 replies
   • 3.3k views
   • 
   • Widdekind
   • April 24, 2011

6. Accelerated Charges act like Off-Gassing Comets

   By Widdekind, April 20, 2011
   • 2 replies
   • 940 views
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   • Ophiolite
   • April 20, 2011

7. Shape of a black hole?

   By Vay, April 4, 2011
   • 20 replies
   • 6.2k views
   • 
   • Spyman
   • April 20, 2011

8. Galaxy Star Formation max @ Scutum,Norma arms ?

   By Widdekind, August 31, 2009
   • 2 replies
   • 2.3k views
   • 
   • Widdekind
   • April 18, 2011

9. early on, Gravity was radically non-Newtonian ??

   By Widdekind, April 15, 2011
   • 5 replies
   • 1.4k views
   • 
   • Widdekind
   • April 18, 2011

10. capabilities of satellite

    By Ivan Tuzikov, April 16, 2011
    • 3 replies
    • 955 views
    • 
    • Klaynos
    • April 16, 2011

11. Black Hole Complementarity

    By laifuthegreat, April 14, 2011
    • 3 replies
    • 1.4k views
    • 
    • Spyman
    • April 15, 2011

12. see through matter and space

    By Ivan Tuzikov, April 4, 2011
    • 10 replies
    • 1.4k views
    • 
    • Ivan Tuzikov
    • April 14, 2011

13. Gravity range?

    By iAmSchrodinger'sCAT, April 11, 2011
    • 4 replies
    • 1.3k views
    • 
    • lemur
    • April 14, 2011

14. condensed dust seeds planet formation ?

    By Widdekind, April 14, 2011
    • 0 replies
    • 1.1k views
    • 
    • Widdekind
    • April 14, 2011

15. cosmos-crossing photons vs. quantum foam ?

    By Widdekind, April 14, 2011
    • 0 replies
    • 716 views
    • 
    • Widdekind
    • April 14, 2011

16. Corona Temperature

    By jimmydasaint, April 11, 2011
    • 5 replies
    • 1.5k views
    • 
    • ecoli
    • April 13, 2011

17. Antimatter Rocket Speed

    By Jon0815, April 11, 2011
    • 6 replies
    • 3k views
    • 
    • Neotropic
    • April 13, 2011

18. Coronal Mass Ejections

    By jamiestem, April 11, 2011
    • 2 replies
    • 1.2k views
    • 
    • jamiestem
    • April 13, 2011

19. Cosmic Microwave Background Anisotropies

    By BJC, April 4, 2011
    • 3 replies
    • 1.4k views
    • 
    • Spyman
    • April 5, 2011

20. Why are planets spherical? Why are molecules spherical? 1 2

    By jamiestem, March 30, 2011
    • 40 replies
    • 6.3k views
    • 
    • lemur
    • April 2, 2011

21. Water on Mercury?

    By sysD, March 30, 2011
    • 18 replies
    • 3.5k views
    • 
    • CaptainPanic
    • March 31, 2011

22. gravity in the asteroid belt

    By lemur, March 28, 2011
    • 2 replies
    • 2.3k views
    • 
    • lemur
    • March 29, 2011

23. Are all atoms spheres?

    By jamiestem, March 28, 2011
    • 1 reply
    • 1.1k views
    • 
    • swansont
    • March 28, 2011

24. How Does Stephen Hawking Research?

    By lamp, March 27, 2011
    • 7 replies
    • 7.1k views
    • 
    • Spyman
    • March 28, 2011

25. same dust cloud at different volumes

    By lemur, March 27, 2011
    • 0 replies
    • 699 views
    • 
    • lemur
    • March 27, 2011