Astronomy and Cosmology

3713 topics in this forum

1. Couple of questions

   By Bergen, July 6, 2010
   • 5 replies
   • 1.5k views
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   • ewmon
   • July 31, 2010

2. Rotating Galaxy Clusters?

   By Fisica, July 15, 2010
   • 6 replies
   • 1.8k views
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   • Royston
   • July 30, 2010

3. Evidence of Water in Lunar Rocks: Water on Moon May Be Widespread, Similar to Earth's

   By alex sam, July 22, 2010
   • 2 replies
   • 1k views
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   • alex sam
   • July 24, 2010

4. How Bright Are Stars and How Many Different Ways Can Astronomers Determine a Star’s Brightness?

   By alex sam, July 22, 2010
   • 1 reply
   • 2.5k views
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   • Martin
   • July 23, 2010

5. Most massive star (10 million times brightness of sun)

   By Martin, July 21, 2010
   • 9 replies
   • 1.9k views
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   • Ophiolite
   • July 23, 2010

6. a space station

   By Mr. physics, July 18, 2010
   • 13 replies
   • 2.1k views
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   • New Zealand
   • July 22, 2010

7. Jupiter and the Eye of Horus

   By gentleman-farmer, July 17, 2010
   • 1 reply
   • 2.2k views
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   • swansont
   • July 17, 2010

8. Neutron stars 1 2

   By eoinmac, June 21, 2010
   • 33 replies
   • 5.5k views
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   • Moontanman
   • July 8, 2010

9. the nature of photons

   By Johanluus, June 28, 2010
   • 3 replies
   • 1.2k views
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   • Spyman
   • July 8, 2010

10. A Question on Black Holes

    By Dajath, July 8, 2010
    • 1 reply
    • 1.1k views
    • 
    • Spyman
    • July 8, 2010

11. black holes or black solid?

    By oresti, June 18, 2010
    • 7 replies
    • 1.9k views
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    • Cropduster23
    • July 7, 2010

12. hmmmmm im wondering

    By japan rocks/andromeda, June 28, 2010
    • 1 reply
    • 1.2k views
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    • July281995
    • July 6, 2010

13. Planet detection by natural laser emission

    By Daumic, June 27, 2010
    • 0 replies
    • 773 views
    • 
    • Daumic
    • June 27, 2010

14. can we see it #2 ? 1 2 3

    By michel123456, June 9, 2010
    • 53 replies
    • 7.3k views
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    • Spyman
    • June 27, 2010

15. Time viewed from the singularity?

    By caharris, June 26, 2010
    • 2 replies
    • 998 views
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    • caharris
    • June 26, 2010

16. Beginning hypothesis

    By eoinmac, June 21, 2010
    • 4 replies
    • 1.5k views
    • 
    • michel123456
    • June 24, 2010

17. Why do the supernovas explode?

    By Nano, June 12, 2010
    • 17 replies
    • 3.7k views
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    • Johanluus
    • June 23, 2010

18. Deceleration of particles with rest mass

    By Coneys, June 19, 2010
    • 8 replies
    • 1.9k views
    • 
    • Johanluus
    • June 23, 2010

19. Webb vs. Hubble

    By caharris, June 16, 2010
    • 1 reply
    • 1k views
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    • mulreay
    • June 22, 2010

20. Defining a Singularity

    By rigney, June 3, 2010
    • 23 replies
    • 3.9k views
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    • ajb
    • June 21, 2010

21. Perhaps... black holes aren't invisible

    By Baby Astronaut, June 15, 2010
    • 7 replies
    • 2k views
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    • Baby Astronaut
    • June 19, 2010

22. Time

    By Anura, June 8, 2010
    • 14 replies
    • 2.1k views
    • 
    • Baby Astronaut
    • June 19, 2010

23. 706 new exoplanet candidates

    By Martin, June 16, 2010
    • 1 reply
    • 1.2k views
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    • Airbrush
    • June 16, 2010

24. Errors in Big Bang Data Larger Than Thought?

    By Jacques, June 15, 2010
    • 4 replies
    • 1.4k views
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    • caharris
    • June 16, 2010

25. Life Detected on Titan - What are your thoughts?

    By iNow, June 6, 2010
    • 18 replies
    • 2.7k views
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    • Realitycheck
    • June 14, 2010