Astronomy and Cosmology

3685 topics in this forum

1. "Surface Tides" (re Xaonon Calculator)

   By GeeKay, June 16, 2013
   • 4 replies
   • 1.2k views
   • 
   • imatfaal
   • June 20, 2013

2. "Typical astrophysicists"

   By Robin Hood, September 24, 2008
   • 1 reply
   • 936 views
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   • Martin
   • September 25, 2008

3. "We're Doomed!!!!!!!" - C3P0

   By admiral_ju00, April 23, 2004
   • 4 replies
   • 1.6k views
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   • admiral_ju00
   • April 24, 2004

4. % of dark matter in a 6 billion years old universe

   By Dynamotime, December 1, 2011
   • 1 reply
   • 1.1k views
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   • Dynamotime
   • December 3, 2011

5. 1 gram solar sail project

   By fred2014, September 26, 2016
   • 7 replies
   • 1.4k views
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   • fred2014
   • October 3, 2016

6. 1/137 fine structure variable?

   By 36grit, January 19, 2011
   • 4 replies
   • 1.4k views
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   • 36grit
   • January 21, 2011

7. 100 billion galaxies?

   By derek w, March 10, 2014
   • 15 replies
   • 2.6k views
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   • Cosmobrain
   • March 12, 2014

8. 103 minutes total lunar eclipse on July 27th 2018 - longest lunar eclipse this century.

   By koti, July 21, 2018
   • 0 replies
   • 537 views
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   • koti
   • July 21, 2018

9. 13 billion year old GRB

   By Arch2008, April 28, 2009
   • 19 replies
   • 2.3k views
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   • Martin
   • April 29, 2009

10. 15 days of darkness

    By Ixquehte, August 22, 2017
    • 7 replies
    • 1.1k views
    • 
    • Janus
    • August 24, 2017

11. 16 year footage around Milky Way black hole

    By Baby Astronaut, December 11, 2008
    • 1 reply
    • 656 views
    • 
    • granpa
    • December 12, 2008

12. 19.4 earth masses of ice inside Saturn

    By granpa, February 9, 2016
    • 16 replies
    • 2.2k views
    • 
    • imatfaal
    • February 11, 2016

13. 1Kg mass = Universe??

    By Daecon, March 15, 2008
    • 1 reply
    • 1.2k views
    • 
    • Martin
    • March 15, 2008

14. 2 Universe interaction

    By Proton Head, November 18, 2004
    • 10 replies
    • 1.7k views
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    • Ophiolite
    • March 25, 2005

15. 20 greastest/most important develpments in space

    By Guest nasza, March 14, 2005
    • 4 replies
    • 1k views
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    • ed84c
    • March 14, 2005

16. 200,000 elliptical galaxies aligned the same way

    By bascule, August 31, 2007
    • 3 replies
    • 1.4k views
    • 
    • Martin
    • August 31, 2007

17. 2012 DA14

    By imatfaal, February 15, 2013
    • 5 replies
    • 1.8k views
    • 
    • imatfaal
    • February 19, 2013

18. 2012 DA14 Flyby path

    By LaurieAG, February 13, 2013
    • 13 replies
    • 3.2k views
    • 
    • Ophiolite
    • February 18, 2013

19. 3 facts maybe you don't know about antimatter

    By alfa015, April 14, 2019
    • 6 replies
    • 1.2k views
    • 
    • Mordred
    • July 10, 2019

20. 3 issues

    By Jurek, September 1, 2014
    • 3 replies
    • 1k views
    • 
    • swansont
    • September 1, 2014

21. 3-body Problem

    By fvicaria, November 28, 2012
    • 0 replies
    • 636 views
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    • fvicaria
    • November 28, 2012

22. 3-dimensional space 1 2

    By bored_teen, June 12, 2008
    • 28 replies
    • 3.1k views
    • 
    • Cap'n Refsmmat
    • June 13, 2008

23. 3-step blackhole

    By stevebtaylor, April 16, 2010
    • 2 replies
    • 798 views
    • 
    • stevebtaylor
    • April 19, 2010

24. 30% of Nuclear Arsenals, for what?

    By Airbrush, April 14, 2010
    • 21 replies
    • 2.8k views
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    • Airbrush
    • April 16, 2010

25. 365 Days Of Astronomy.

    By interstellar, January 22, 2009
    • 0 replies
    • 800 views
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    • interstellar
    • January 22, 2009