Astronomy and Cosmology

3708 topics in this forum

1. "Creation" of the Universe

   By Ivan Tuzikov, February 5, 2013
   • 7 replies
   • 1.7k views
   • 
   • Spyman
   • February 6, 2013

2. Cosmic Microwave Background disprove 'Big Bang'

   By george909, March 29, 2021
   • 9 replies
   • 1.7k views
   • 
   • swansont
   • July 1, 2021

3. Expanding Space Questions

   By Jeremy Mallin, December 26, 2012
   • 6 replies
   • 1.7k views
   • 
   • StringJunky
   • December 27, 2012

4. When will high traffic space flights begin?

   By alt_f13, August 16, 2004
   • 9 replies
   • 1.7k views
   • 
   • Mad Mardigan
   • October 11, 2004

5. Dimensions?

   By person, July 6, 2008
   • 10 replies
   • 1.7k views
   • 
   • iNow
   • July 8, 2008

6. U.F.O's

   By us.2u, December 4, 2004
   • 7 replies
   • 1.7k views
   • 
   • astromark
   • December 5, 2004

7. Dispelling infinite universes

   By Royston, June 23, 2005
   • 6 replies
   • 1.7k views
   • 
   • danny8522003
   • July 16, 2005

8. Size of the Universe

   By Perkinsjc12, November 8, 2013
   • 6 replies
   • 1.7k views
   • 
   • Alan McDougall
   • January 4, 2014

9. Earth Gravity

   By AmirShahzad.PK, July 29, 2015
   • 8 replies
   • 1.7k views
   • 
   • Acme
   • August 17, 2015

10. Binary Systems and Supermassive Black Holes

    By antimatter, March 20, 2008
    • 16 replies
    • 1.7k views
    • 
    • Klaynos
    • May 1, 2008

11. Questions on Dark Energy...

    By rrw4rusty, September 30, 2009
    • 5 replies
    • 1.7k views
    • 
    • Tugrul
    • November 10, 2009

12. What is "Speed increment at infinite"

    By Bjarne, August 10, 2013
    • 9 replies
    • 1.7k views
    • 
    • Airbrush
    • August 12, 2013

13. Help with Friedman equations and density of energy

    By Helpsearcher, October 29, 2013
    • 2 replies
    • 1.7k views
    • 
    • Helpsearcher
    • October 31, 2013

14. The Violence of the Early Universe:

    By beecee, July 1, 2017
    • 9 replies
    • 1.7k views
    • 
    • Silvestru
    • July 7, 2017

15. shape of universe..worked out...

    By young-albert, March 1, 2007
    • 7 replies
    • 1.7k views
    • 
    • ajb
    • March 13, 2007

16. Observing black hole mergers (conference on signs to look for, computer sims)

    By Martin, March 19, 2009
    • 11 replies
    • 1.7k views
    • 
    • Airbrush
    • April 2, 2009

17. GRB jet generation mechanism ?

    By Widdekind, July 1, 2011
    • 1 reply
    • 1.7k views
    • 
    • Widdekind
    • July 21, 2011

18. are there He-core WDs ??

    By Widdekind, August 11, 2011
    • 5 replies
    • 1.7k views
    • 
    • Widdekind
    • August 19, 2011

19. Telescope + Computer

    By Crash, August 3, 2005
    • 9 replies
    • 1.7k views
    • 
    • YT2095
    • August 8, 2005

20. Could we detect a Dyson Swarm?

    By 3blake7, March 8, 2016
    • 3 replies
    • 1.7k views
    • 
    • 3blake7
    • March 9, 2016

21. Are BHs orbited, at Event Horizon, by "light rings" ?

    By Widdekind, August 18, 2011
    • 5 replies
    • 1.7k views
    • 
    • pantheory
    • August 26, 2011

22. Decisive Answer Please......

    By us.2u, March 29, 2005
    • 15 replies
    • 1.7k views
    • 
    • blike
    • March 29, 2005

23. Can a singularity be reached?

    By dstebbins, May 21, 2007
    • 12 replies
    • 1.7k views
    • 
    • Royston
    • May 31, 2007

24. IS the universe flat?

    By fattyjwoods, August 9, 2007
    • 7 replies
    • 1.7k views
    • 
    • sammyooba
    • August 17, 2007

25. Measuring a Black Hole mass

    By Martin, August 16, 2004
    • 6 replies
    • 1.7k views
    • 
    • Martin
    • August 24, 2004