Astronomy and Cosmology

3708 topics in this forum

1. A.S.I.G.N. Astrophotography Guide

   By bloodhound31, November 30, 2007
   • 8 replies
   • 1.6k views
   • 
   • richard
   • December 11, 2007

2. Assuming a black hole

   By AO2012, April 17, 2009
   • 10 replies
   • 1.6k views
   • 
   • AO2012
   • April 18, 2009

3. Cyclic models and set theory....

   By _heretic, May 26, 2012
   • 4 replies
   • 1.6k views
   • 
   • robheus
   • June 30, 2012

4. One detail about the Big Bang that I am still not to clear on...

   By Excalibur0047, January 7, 2017
   • 14 replies
   • 1.6k views
   • 
   • StringJunky
   • January 9, 2017

5. Liquid Drop Model applies to Neutron Stars ?

   By Widdekind, August 8, 2011
   • 0 replies
   • 1.6k views
   • 
   • Widdekind
   • August 8, 2011

6. Free Astronomy/Science Info sources

   By Astronomy, January 26, 2014
   • 5 replies
   • 1.6k views
   • 
   • hypervalent_iodine
   • January 27, 2014

7. What is the mechanism for SPACE EXPANSION ?

   By Marius, January 2, 2022
   • 15 replies
   • 1.6k views
   • 
   • Phi for All
   • January 5, 2022

8. If there was a big bang 14 or so billion years ago and all mass

   By Angelo, January 7, 2020
   • 14 replies
   • 1.6k views
   • 
   • Mordred
   • January 8, 2020

9. trying to understand gas cloud collapse ?

   By Widdekind, January 25, 2012
   • 3 replies
   • 1.6k views
   • 
   • ajb
   • February 4, 2012

10. Chances of a comet hitting us ?

    By boo, September 2, 2019
    • 8 replies
    • 1.6k views
    • 
    • Janus
    • September 3, 2019

11. earth's magnetic field

    By Guest wired, July 8, 2004
    • 7 replies
    • 1.6k views
    • 
    • ydoaPs
    • July 10, 2004

12. Survial Or Destruction?

    By us.2u, May 12, 2005
    • 8 replies
    • 1.6k views
    • 
    • Guest
    • May 16, 2005

13. Telescope

    By RAJESHKUMAR110, November 25, 2008
    • 6 replies
    • 1.6k views
    • 
    • Flashman
    • November 25, 2008

14. First Jupitor now Saturn's rings getting hit???

    By Lightingbird, August 13, 2009
    • 2 replies
    • 1.6k views
    • 
    • DrP
    • August 13, 2009

15. black holes

    By Guy34life, June 23, 2003
    • 4 replies
    • 1.6k views
    • 
    • Guy34life
    • June 24, 2003

16. Inconsistencies between recession speeds and distance to far objects

    By Halc, June 7, 2020
    • 9 replies
    • 1.6k views
    • 
    • Mordred
    • June 11, 2020

17. Runaway Planets Zoom at a Fraction of Light-Speed

    By the asinine cretin, March 23, 2012
    • 6 replies
    • 1.6k views
    • 
    • Spyman
    • March 25, 2012

18. What is dark matter?

    By KANDEL, December 26, 2019
    • 4 replies
    • 1.6k views
    • 
    • qidran
    • June 4, 2020

19. Black Hole, maybe?

    By rigney, May 26, 2010
    • 9 replies
    • 1.6k views
    • 
    • Nano
    • May 31, 2010

20. Lack of magnetic field on Mars

    By Silvestru, September 13, 2017
    • 6 replies
    • 1.6k views
    • 
    • swansont
    • September 22, 2017

21. Am I right?

    By Samphire, September 17, 2005
    • 8 replies
    • 1.6k views
    • 
    • Janus
    • September 17, 2005

22. Gravity Hypothesis

    By Raxsus, July 25, 2016
    • 7 replies
    • 1.6k views
    • 
    • Ivanov2000
    • October 7, 2016

23. Why does fine-tunning for life suggest a multiverse? 1 2

    By Boltzmannbrain, October 2, 2023
    • 27 replies
    • 1.6k views
    • 
    • Genady
    • October 4, 2023

24. Expanding distance

    By Riogho, April 5, 2008
    • 9 replies
    • 1.6k views
    • 
    • insane_alien
    • April 7, 2008

25. Cosmic Horizons

    By BJC, April 29, 2011
    • 4 replies
    • 1.6k views
    • 
    • BJC
    • May 1, 2011