Astronomy and Cosmology

3708 topics in this forum

1. Anyone out there?

   By MaxCathedral, September 20, 2003
   • 21 replies
   • 3.2k views
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   • Sayonara
   • October 13, 2003

2. Kepler Orbit

   By h4tt3n, December 2, 2010
   • 12 replies
   • 3.2k views
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   • D H
   • December 17, 2010

3. Inconsistency between Velocity vs Redshift and Scale Factor vs Time plots 1 2 3 4

   By Nicram, July 17
   • 91 replies
   • 3.2k views
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   • swansont
   • July 20

4. Exomoons and the mass of exoplanets

   By Ed Joyce, March 26, 2012
   • 15 replies
   • 3.2k views
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   • Ed Joyce
   • August 14, 2017

5. The accelerating universe - Cosmic inflation

   By BlackHole, March 11, 2005
   • 20 replies
   • 3.2k views
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   • BlackHole
   • March 14, 2005

6. Could we detect an intrinsic change in the flow of time? 1 2

   By substitutematerials, October 17, 2016
   • 37 replies
   • 3.2k views
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   • koti
   • October 21, 2016

7. Questions on Redshift, Distance and Space Expansion 1 2

   By AbstractDreamer, November 17, 2016
   • 27 replies
   • 3.2k views
   • 
   • Mordred
   • December 1, 2016

8. Core Contraction powers RGB on HRD ?

   By Widdekind, August 11, 2011
   • 0 replies
   • 3.2k views
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   • Widdekind
   • August 11, 2011

9. Why would we expect an Anti-Universe to be detectable?

   By TakenItSeriously, January 7, 2016
   • 21 replies
   • 3.2k views
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   • Strange
   • January 17, 2016

10. the dimensions

    By toolman, July 26, 2004
    • 22 replies
    • 3.2k views
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    • Severian
    • October 12, 2004

11. Faster than light is normal

    By Martin, June 19, 2004
    • 24 replies
    • 3.2k views
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    • ydoaPs
    • July 6, 2004

12. Why don't we feel like we are hanging backwards on earth??

    By Iwonderaboutthings, August 2, 2013
    • 10 replies
    • 3.2k views
    • 
    • Iwonderaboutthings
    • August 7, 2013

13. Voyager

    By Bettina, May 23, 2006
    • 12 replies
    • 3.2k views
    • 
    • Martin
    • July 1, 2006

14. Space cannot expand because it has no shape--claim by Sovereign

    By Sovereign, October 31, 2008
    • 22 replies
    • 3.2k views
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    • Baby Astronaut
    • November 19, 2008

15. Is ΛCDM considered "speculative?" 1 2

    By Schneibster, February 18, 2014
    • 29 replies
    • 3.2k views
    • 
    • ajb
    • March 1, 2014

16. Muitiple Universes In The Same Space?

    By Some "Genius", December 5, 2011
    • 20 replies
    • 3.2k views
    • 
    • JohnStu
    • February 28, 2012

17. Shape of the universe

    By Cap'n Refsmmat, September 15, 2008
    • 19 replies
    • 3.2k views
    • 
    • Martin
    • October 21, 2008

18. How can we see light from the early primordial universe?

    By Alan McDougall, July 10, 2012
    • 20 replies
    • 3.2k views
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    • alpha2cen
    • July 21, 2012

19. sound in space 1 2

    By maitri, August 26, 2017
    • 30 replies
    • 3.2k views
    • 
    • mistermack
    • September 13, 2017

20. when does the universe end

    By Big Nerd, September 24, 2011
    • 12 replies
    • 3.2k views
    • 
    • JohnStu
    • April 9, 2012

21. The end of all?

    By bob000555, June 5, 2006
    • 22 replies
    • 3.2k views
    • 
    • Klaynos
    • June 9, 2006

22. Detection of torchships by exhaust plume 1 2

    By Ivan Tuzikov, February 3, 2016
    • 34 replies
    • 3.2k views
    • 
    • Ivan Tuzikov
    • February 12, 2016

23. black holes and matter-antimatter imbalance

    By BurntSnow, November 18, 2010
    • 10 replies
    • 3.1k views
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    • csmyth3025
    • September 24, 2011

24. Does expansion modify the properties of space?

    By zapatos, December 24, 2010
    • 19 replies
    • 3.1k views
    • 
    • swansont
    • January 5, 2011

25. Water giant?

    By Daecon, April 8, 2008
    • 22 replies
    • 3.1k views
    • 
    • insane_alien
    • April 11, 2008