Astronomy and Cosmology

3705 topics in this forum

1. Non spherical Supernova Explosion?

   By Nicholas Kang, June 25, 2014
   • 4 replies
   • 1.3k views
   • 
   • Nicholas Kang
   • June 29, 2014

2. Protection by the magnetic field

   By Hazel M, June 21, 2014
   • 19 replies
   • 2k views
   • 
   • Acme
   • June 24, 2014

3. The Big Bang (split from What exactly is energy)

   By Mike Smith Cosmos, June 19, 2014
   • 9 replies
   • 1.3k views
   • 
   • Strange
   • June 24, 2014

4. Expandable contraction and the big bang

   By hydrodynamicdan, June 23, 2014
   • 2 replies
   • 737 views
   • 
   • Mordred
   • June 23, 2014

5. The Cross-Section of Solar Flares

   By GeeKay, June 21, 2014
   • 3 replies
   • 939 views
   • 
   • swansont
   • June 22, 2014

6. What are the stages of life of a star of spectral class O?

   By PhantomAvocado, June 22, 2014
   • 2 replies
   • 1k views
   • 
   • Mordred
   • June 22, 2014

7. Univers Inside a black hole 1 2 3 4 5

   By Edgard Neuman, April 19, 2014
   • 107 replies
   • 11k views
   • 
   • Mordred
   • June 20, 2014

8. Pluto the Dwarf Planet. Why Dwarf? Why Not? 1 2

   By Nicholas Kang, June 11, 2014
   • 26 replies
   • 2.9k views
   • 
   • Nicholas Kang
   • June 19, 2014

9. Gravity Range of a Galaxy

   By Deepak Kapur, June 11, 2014
   • 8 replies
   • 1.3k views
   • 
   • swansont
   • June 13, 2014

10. Black Hole, Grey Hole, Stephen Hawking, Worm Hole

    By Nicholas Kang, June 11, 2014
    • 4 replies
    • 1.8k views
    • 
    • Nicholas Kang
    • June 11, 2014

11. Transmissions From Colony One - A realistic radio play about Mars exploration

    By richtersaurus, June 9, 2014
    • 0 replies
    • 823 views
    • 
    • richtersaurus
    • June 9, 2014

12. Why LIGO does not detect gravitational waves?

    By Гера�им, May 19, 2014
    • 10 replies
    • 1.9k views
    • 
    • ГераÑ�им
    • June 9, 2014

13. tighter Hubble constant value published 2014

    By Mordred, June 9, 2014
    • 0 replies
    • 915 views
    • 
    • Mordred
    • June 9, 2014

14. metastable Higg's field vs Higg's inflation

    By Mordred, June 7, 2014
    • 4 replies
    • 1.4k views
    • 
    • Mordred
    • June 7, 2014

15. Light and Big Bang

    By Deepak Kapur, June 1, 2014
    • 8 replies
    • 1.4k views
    • 
    • Strange
    • June 6, 2014

16. Gama Ray Bursts datasets that consist of distance modulus and redshift

    By kosmolog, June 4, 2014
    • 1 reply
    • 982 views
    • 
    • hoola
    • June 5, 2014

17. What is the mathematical equation for the best-fit model of CMB power spectrum?

    By awu, June 3, 2014
    • 6 replies
    • 1.8k views
    • 
    • awu
    • June 5, 2014

18. Satellite Transmitter

    By Huma, May 29, 2014
    • 3 replies
    • 1.3k views
    • 
    • Enthalpy
    • June 2, 2014

19. What caused the big bang?

    By Genecks, May 4, 2014
    • 13 replies
    • 2.6k views
    • 
    • petrushka.googol
    • June 1, 2014

20. Killer Asteroids

    By JohnC, May 19, 2014
    • 13 replies
    • 2.3k views
    • 
    • Airbrush
    • May 31, 2014

21. Atmosphere of Titan

    By Kirin Eldridge, May 30, 2014
    • 1 reply
    • 1k views
    • 
    • Moontanman
    • May 30, 2014

22. Basic knowledge of Astronomy and Astrophysics necessary in the field ? (For a youngster with an interest)

    By Arkryne01, May 21, 2014
    • 7 replies
    • 2.2k views
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    • imatfaal
    • May 30, 2014

23. A few questions

    By DTonesXD, May 19, 2014
    • 11 replies
    • 1.8k views
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    • Acme
    • May 20, 2014

24. How did hydrogen and helium gas collapse to form the first celestial object in the early universe?

    By TheSameDude, April 29, 2014
    • 14 replies
    • 1.7k views
    • 
    • Mordred
    • May 12, 2014

25. Description of a photon

    By John0117, May 6, 2014
    • 11 replies
    • 2.2k views
    • 
    • Enthalpy
    • May 11, 2014