Astronomy and Cosmology

3708 topics in this forum

1. Big crunch

   By copperstream, May 22, 2008
   • 14 replies
   • 2.2k views
   • 
   • iNow
   • June 7, 2008

2. Evidence of past CMB (split from steady state universe)

   By michel123456, October 26, 2014
   • 17 replies
   • 2.2k views
   • 
   • MigL
   • October 28, 2014

3. Newbie Questions

   By sammyooba, August 17, 2007
   • 12 replies
   • 2.1k views
   • 
   • Jacques
   • August 24, 2007

4. A question about black holes

   By Equilibrium, October 19, 2010
   • 10 replies
   • 2.1k views
   • 
   • lemur
   • October 22, 2010

5. Microwave Background Radiation

   By igosaur, August 22, 2007
   • 17 replies
   • 2.1k views
   • 
   • YT2095
   • August 29, 2007

6. Jupiter and the Eye of Horus

   By gentleman-farmer, July 17, 2010
   • 1 reply
   • 2.1k views
   • 
   • swansont
   • July 17, 2010

7. cosmos

   By unnoticed oracle, July 8, 2011
   • 13 replies
   • 2.1k views
   • 
   • csmyth3025
   • July 18, 2011

8. Diamond Planet

   By Cap'n Refsmmat, February 17, 2004
   • 10 replies
   • 2.1k views
   • 
   • Fluent in Lies
   • March 29, 2004

9. trying to understand Lyman-alpha forest

   By Widdekind, November 14, 2012
   • 1 reply
   • 2.1k views
   • 
   • Widdekind
   • November 15, 2012

10. is e=mc^2 a unairy mechanisim

    By shmengie, April 28, 2015
    • 17 replies
    • 2.1k views
    • 
    • shmengie
    • April 30, 2015

11. Hawking radiation

    By swansont, April 6, 2020
    • 11 replies
    • 2.1k views
    • 
    • MigL
    • April 6, 2020

12. Solar System - Mars

    By Airmid, January 6, 2007
    • 11 replies
    • 2.1k views
    • 
    • weknowthewor
    • March 3, 2007

13. Visualizing the "Flatness Problem" ??

    By Widdekind, July 21, 2011
    • 2 replies
    • 2.1k views
    • 
    • 36grit
    • July 28, 2011

14. Why sky is Black at nights?

    By alinoroozi, July 22, 2013
    • 16 replies
    • 2.1k views
    • 
    • J.C.MacSwell
    • July 27, 2013

15. warp speed

    By Guy34life, June 24, 2003
    • 8 replies
    • 2.1k views
    • 
    • Sayonara
    • June 27, 2003

16. The universe is Euclidian.

    By gib65, November 28, 2009
    • 10 replies
    • 2.1k views
    • 
    • michel123456
    • December 1, 2009

17. Dark Matter vs. Alternative Theories

    By suburban, February 20, 2013
    • 3 replies
    • 2.1k views
    • 
    • suburban
    • February 20, 2013

18. Dropping Phobos and Deimos

    By Fellow, January 9, 2004
    • 13 replies
    • 2.1k views
    • 
    • Sayonara
    • January 9, 2004

19. Neutron star evaporation

    By entropydave, May 13, 2005
    • 6 replies
    • 2.1k views
    • 
    • srh
    • May 13, 2005

20. Superluminal Galaxies?

    By blike, July 20, 2002
    • 7 replies
    • 2.1k views
    • 
    • Radical Edward
    • July 21, 2002

21. Astronomical Distance Scale

    By Martin, April 8, 2006
    • 5 replies
    • 2.1k views
    • 
    • Martin
    • April 8, 2006

22. Earth inching towards or away from sun?

    By Baby Astronaut, August 20, 2009
    • 10 replies
    • 2.1k views
    • 
    • mooeypoo
    • August 21, 2009

23. Changing Universal Constants

    By t-star, August 12, 2013
    • 5 replies
    • 2.1k views
    • 
    • hypervalent_iodine
    • August 25, 2013

24. Closed Dyson sphere : is it really impossible ?

    By Edgard Neuman, January 24, 2022
    • 18 replies
    • 2.1k views
    • 
    • Edgard Neuman
    • January 30, 2022

25. Moon to turn RED! ;)

    By YT2095, November 8, 2003
    • 10 replies
    • 2.1k views
    • 
    • YT2095
    • November 9, 2003