Astronomy and Cosmology

3708 topics in this forum

1. Moving Earth - Experimental facts.

   By Obelix, October 28, 2008
   • 3 replies
   • 1.1k views
   • 
   • D H
   • October 28, 2008

2. Frozen earth

   By devrimci_kürt, January 29, 2009
   • 4 replies
   • 1.1k views
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   • scrappy
   • January 29, 2009

3. Cosmic filaments and universe expansion

   By Ghideon, April 13, 2019
   • 4 replies
   • 1.1k views
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   • Ghideon
   • April 14, 2019

4. why there is only 7 days in a week?

   By Guest, January 1, 1970
   • 0 replies
   • 1.1k views
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   • Guest
   • January 1, 1970

5. Galactic structure

   By smooth, March 30, 2008
   • 5 replies
   • 1.1k views
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   • Klaynos
   • April 1, 2008

6. cosmological constant, dark energy and Hubble radius

   By stephaneww, December 4, 2015
   • 1 reply
   • 1.1k views
   • 
   • stephaneww
   • December 7, 2015

7. Tidal locking in a Red Dwarf System - How would large moon affect?

   By Althistorybuff, September 27, 2021
   • 4 replies
   • 1.1k views
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   • Airbrush
   • October 5, 2021

8. Cassini update

   By TimeTraveler, December 6, 2004
   • 2 replies
   • 1.1k views
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   • TimeTraveler
   • December 6, 2004

9. Great Red Spot Question

   By herpguy, January 22, 2006
   • 7 replies
   • 1.1k views
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   • Ophiolite
   • January 22, 2006

10. Distance of a star

    By electricman6913, January 5, 2009
    • 4 replies
    • 1.1k views
    • 
    • NowThatWeKnow
    • January 5, 2009

11. New gammaray space telescope's first picture

    By Martin, August 30, 2008
    • 0 replies
    • 1.1k views
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    • Martin
    • August 30, 2008

12. Wednesday, LHC to recreate birth of universe

    By Arch2008, September 10, 2008
    • 1 reply
    • 1.1k views
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    • YT2095
    • September 10, 2008

13. Going out on a limb with parallel universes, gravitons and probability expansion!

    By rrw4rusty, October 1, 2009
    • 1 reply
    • 1.1k views
    • 
    • Arch2008
    • October 1, 2009

14. Alive and dead in the cosmos

    By ProximaCentauri, April 8, 2020
    • 8 replies
    • 1.1k views
    • 
    • Mordred
    • April 9, 2020

15. Big Bang starting reference point 1 2

    By bsolomon_us, May 16
    • 30 replies
    • 1.1k views
    • 
    • Mordred
    • May 18

16. Globular Clusters are swallowed Galaxies

    By Widdekind, May 11, 2009
    • 4 replies
    • 1.1k views
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    • Widdekind
    • May 24, 2009

17. Expanding a singularity

    By pioneer, July 5, 2009
    • 2 replies
    • 1.1k views
    • 
    • Martin
    • July 5, 2009

18. Mysterious spots on Pluto.

    By Mad For Science, July 2, 2015
    • 1 reply
    • 1.1k views
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    • pavelcherepan
    • July 8, 2015

19. Moon craters explained.

    By reverse, May 27, 2005
    • 2 replies
    • 1.1k views
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    • Ophiolite
    • May 27, 2005

20. Questions about fundamental astronomy

    By Primarygun, July 19, 2007
    • 1 reply
    • 1.1k views
    • 
    • Jacques
    • July 19, 2007

21. big bang theory

    By quantum125, March 14, 2010
    • 3 replies
    • 1.1k views
    • 
    • Radical Edward
    • March 15, 2010

22. Particle possible existing in parallel universes

    By Alan McDougall, July 12, 2012
    • 3 replies
    • 1.1k views
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    • alpha2cen
    • July 12, 2012

23. Delta Aquarids

    By imatfaal, July 28, 2017
    • 0 replies
    • 1.1k views
    • 
    • imatfaal
    • July 28, 2017

24. Water...and blueberry muffins on mars?

    By kenel, March 3, 2004
    • 0 replies
    • 1.1k views
    • 
    • kenel
    • March 3, 2004

25. Could Gravitational Redshift just be a conservation of energy ?

    By sally, April 1, 2006
    • 1 reply
    • 1.1k views
    • 
    • [Tycho?]
    • April 2, 2006