Astronomy and Cosmology

3708 topics in this forum

1. Light transmission over large distances

   By John0117, May 6, 2014
   • 12 replies
   • 1.7k views
   • 
   • swansont
   • May 7, 2014

2. What is the methodology for concluding accelerated expansion?

   By Cosmo_Ken, December 12, 2017
   • 6 replies
   • 1.7k views
   • 
   • T. McGrath
   • December 14, 2017

3. Expanding universe: once again I am confused...

   By rrw4rusty, October 14, 2009
   • 9 replies
   • 1.7k views
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   • Sorcerer
   • November 2, 2009

4. A new style reflecting telescope

   By square173205, November 19, 2007
   • 4 replies
   • 1.7k views
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   • John Cuthber
   • November 19, 2007

5. so many questions, so little time!!

   By poider, April 18, 2014
   • 10 replies
   • 1.7k views
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   • Airbrush
   • April 21, 2014

6. Information Leaking from Black Holes

   By antimatter, March 22, 2008
   • 11 replies
   • 1.7k views
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   • antimatter
   • March 25, 2008

7. NASA budget cuts.....again.

   By ProjectOrion, December 1, 2004
   • 8 replies
   • 1.7k views
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   • Rasori
   • January 9, 2005

8. The Early Universe

   By NowThatWeKnow, January 3, 2009
   • 8 replies
   • 1.7k views
   • 
   • NowThatWeKnow
   • January 4, 2009

9. sun

   By japan rocks/andromeda, March 28, 2010
   • 6 replies
   • 1.7k views
   • 
   • michel123456
   • April 1, 2010

10. Star in the East

    By DavidJames, September 22, 2011
    • 5 replies
    • 1.7k views
    • 
    • imatfaal
    • September 23, 2011

11. Supernova Rate in Milky Way, why low?

    By EdEarl, March 26, 2016
    • 6 replies
    • 1.7k views
    • 
    • Raider5678
    • March 30, 2016

12. Unruh Radiation

    By Quetzalcoatl, November 4, 2015
    • 7 replies
    • 1.7k views
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    • Quetzalcoatl
    • November 10, 2015

13. Quantum cosmology

    By fafalone, November 7, 2002
    • 6 replies
    • 1.7k views
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    • antimatter
    • March 21, 2008

14. interesting idea but is it a accomplishable

    By space noob, May 15, 2012
    • 6 replies
    • 1.7k views
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    • Airbrush
    • May 16, 2012

15. Why is the universe asymmetrical instead of symmetrical?

    By Alan McDougall, July 1, 2012
    • 5 replies
    • 1.7k views
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    • CaptainPanic
    • July 9, 2012

16. multiple universes

    By petebro, May 7, 2009
    • 7 replies
    • 1.7k views
    • 
    • steevey
    • February 10, 2011

17. Outer space scanning

    By Ivan Tuzikov, January 4, 2016
    • 6 replies
    • 1.7k views
    • 
    • EdEarl
    • January 27, 2016

18. New optic instrument " interSpeedmeter" - New discover

    By rusek, November 4, 2012
    • 8 replies
    • 1.7k views
    • 
    • John Cuthber
    • November 13, 2012

19. What is the universe?

    By PrimalMinister, May 23, 2019
    • 22 replies
    • 1.7k views
    • 
    • The Shadow
    • July 10, 2019

20. Multiple orgasm supernovas

    By Martin, November 16, 2007
    • 9 replies
    • 1.7k views
    • 
    • Martin
    • November 20, 2007

21. triple point of light

    By stevebtaylor, March 24, 2010
    • 12 replies
    • 1.7k views
    • 
    • stevebtaylor
    • April 19, 2010

22. Early Moon's orbit - Question

    By Althistorybuff, March 23, 2017
    • 9 replies
    • 1.7k views
    • 
    • Althistorybuff
    • April 5, 2017

23. The speed change of Oumuamua

    By peglerbc, December 29, 2018
    • 7 replies
    • 1.7k views
    • 
    • swansont
    • July 10, 2019

24. comets

    By ads8525, April 12, 2008
    • 10 replies
    • 1.7k views
    • 
    • Jacques
    • April 15, 2008

25. A question about Hubble's Law

    By Maartenn100, May 2, 2018
    • 7 replies
    • 1.7k views
    • 
    • Maartenn100
    • May 6, 2018