Astronomy and Cosmology

3708 topics in this forum

1. universe 1 2

   By MulderMan, December 30, 2004
   • 26 replies
   • 3.6k views
   • 
   • Martin
   • January 3, 2005

2. Hawking "Grand Design" tinny and inelegant

   By Martin, September 7, 2010
   • 11 replies
   • 3.6k views
   • 
   • DanielC
   • October 9, 2010

3. wind without air?

   By alcanfor, January 28, 2006
   • 8 replies
   • 3.6k views
   • 
   • alcanfor
   • January 28, 2006

4. dark matter question 1 2 3

   By hoola, January 1, 2023
   • 70 replies
   • 3.6k views
   • 
   • Mordred
   • January 27, 2023

5. Water on Mercury?

   By sysD, March 30, 2011
   • 18 replies
   • 3.6k views
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   • CaptainPanic
   • March 31, 2011

6. Galaxy rotation curve

   By ccwebb, March 24, 2014
   • 18 replies
   • 3.6k views
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   • LaurieAG
   • March 30, 2014

7. Changing a spaceship's direction via ejecting mass 1 2

   By CyborgTriceratops, December 31, 2013
   • 35 replies
   • 3.6k views
   • 
   • Alan McDougall
   • January 9, 2014

8. Gravity

   By Vindhya, July 10, 2008
   • 23 replies
   • 3.6k views
   • 
   • Klaynos
   • August 21, 2008

9. Theory of the creation of everything

   By sciguy1, December 15, 2011
   • 22 replies
   • 3.6k views
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   • swansont
   • January 9, 2012

10. The Big Freeze?

    By KholdStunner, March 11, 2005
    • 22 replies
    • 3.6k views
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    • swansont
    • March 26, 2005

11. What's in a Black Hole - Can't We Find Out? 1 2

    By jimmydasaint, February 14, 2009
    • 29 replies
    • 3.6k views
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    • Primordial
    • February 17, 2009

12. Watching the Big Bang? 1 2

    By YT2095, November 17, 2007
    • 33 replies
    • 3.6k views
    • 
    • YT2095
    • December 4, 2007

13. Book Suggestions

    By Ewen, July 3, 2005
    • 12 replies
    • 3.6k views
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    • capnqwest
    • August 5, 2005

14. Aterna's question---the unexpected cosmic horizon 1 2

    By Martin, September 2, 2008
    • 27 replies
    • 3.6k views
    • 
    • Martin
    • October 19, 2008

15. space-time:fabric, foam, or what?

    By tomc, December 5, 2008
    • 23 replies
    • 3.6k views
    • 
    • NowThatWeKnow
    • January 7, 2009

16. hypervelocity star mass

    By space noob, May 8, 2012
    • 22 replies
    • 3.5k views
    • 
    • Airbrush
    • May 16, 2012

17. Can causality and symmetry teach us anything about cosmology? 1 2

    By bascule, January 5, 2006
    • 26 replies
    • 3.5k views
    • 
    • aguy2
    • January 8, 2006

18. Worm holes

    By TransformerRobot, May 27, 2012
    • 23 replies
    • 3.5k views
    • 
    • Nigel
    • June 3, 2012

19. Solar system future: John Baez timeline 1 2

    By Martin, May 28, 2007
    • 27 replies
    • 3.5k views
    • 
    • Spyman
    • July 2, 2007

20. Binary Solar System 1 2

    By AbnormallyHonest, May 22, 2017
    • 30 replies
    • 3.5k views
    • 
    • AbnormallyHonest
    • June 28, 2017

21. Who will save our earth?

    By emaad, October 22, 2008
    • 24 replies
    • 3.5k views
    • 
    • Flashman
    • November 10, 2008

22. Mars Pictures 1 2

    By us.2u, February 17, 2005
    • 25 replies
    • 3.5k views
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    • Newtonian
    • February 27, 2005

23. Nasa release: Bunny on Mars

    By mooeypoo, March 5, 2004
    • 20 replies
    • 3.5k views
    • 
    • Pinch Paxton
    • March 16, 2004

24. Lunar noon...

    By Externet, October 12, 2014
    • 2 replies
    • 3.5k views
    • 
    • Externet
    • October 12, 2014

25. René Descartes's Theory

    By N S, January 20, 2013
    • 5 replies
    • 3.5k views
    • 
    • Civat
    • January 27, 2013