Astronomy and Cosmology

3685 topics in this forum

1. 3D Dark Matter Map

   By Royston, January 9, 2007
   • 17 replies
   • 1.8k views
   • 
   • Royston
   • February 23, 2007

2. 3D satellite world map

   By Guest michaltina, August 25, 2003
   • 3 replies
   • 1.3k views
   • 
   • apollo2011
   • September 6, 2003

3. 3D Space Simulator

   By C60, May 4, 2005
   • 5 replies
   • 1.7k views
   • 
   • Dave
   • May 25, 2005

4. 4.5 billion year old "space concrete"

   By Widdekind, December 15, 2011
   • 1 reply
   • 1.1k views
   • 
   • Ophiolite
   • December 15, 2011

5. 40TH Anniversary: NASAs Longest and Farthest.

   By beecee, August 4, 2017
   • 10 replies
   • 1.3k views
   • 
   • beecee
   • August 11, 2017

6. 5 new Exoplanets!

   By Arch2008, June 18, 2009
   • 19 replies
   • 2.9k views
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   • Airbrush
   • January 6, 2010

7. 5-earthmass planet found 1 2

   By Martin, January 26, 2006
   • 25 replies
   • 3.9k views
   • 
   • bascule
   • April 27, 2007

8. 50th anniversary of space exploration

   By Royston, October 5, 2007
   • 8 replies
   • 1.7k views
   • 
   • Mr Skeptic
   • October 27, 2007

9. 6 Sun coardinate system

   By Guest DoubleHelix, May 28, 2005
   • 2 replies
   • 831 views
   • 
   • Guest
   • May 29, 2005

10. 67P as an apple core

    By Enthalpy, February 17, 2015
    • 2 replies
    • 1.4k views
    • 
    • Enthalpy
    • September 29, 2015

11. 70 sextillion visible stars

    By matter, July 23, 2003
    • 8 replies
    • 1.8k views
    • 
    • Kedas
    • July 25, 2003

12. 706 new exoplanet candidates

    By Martin, June 16, 2010
    • 1 reply
    • 1.1k views
    • 
    • Airbrush
    • June 16, 2010

13. 75+/-25km*s^-1*Mpc^-1: parabolic, hyperbolic, or elliptical?

    By fafalone, January 24, 2003
    • 2 replies
    • 1.7k views
    • 
    • Skye
    • April 19, 2003

14. 8 minutes for the Sun's light to reach the earth?

    By dstebbins, February 23, 2010
    • 11 replies
    • 1.8k views
    • 
    • Iggy
    • March 5, 2010

15. A 2nd Sun?

    By King, North TX, January 21, 2011
    • 13 replies
    • 3.3k views
    • 
    • King, North TX
    • January 21, 2011

16. a baby in space? 1 2

    By devrimci_kürt, March 29, 2009
    • 27 replies
    • 4k views
    • 
    • J.C.MacSwell
    • May 29, 2009

17. A basic question about the big bang

    By Courage, July 17, 2019
    • 7 replies
    • 1.1k views
    • 
    • Mordred
    • July 25, 2019

18. a Begining and End

    By who_knows, April 29, 2005
    • 7 replies
    • 1.4k views
    • 
    • jutntog1
    • May 3, 2005

19. A big bang in an infinite flat universe? 1 2

    By bascule, December 7, 2005
    • 32 replies
    • 3.5k views
    • 
    • guardian
    • December 10, 2005

20. A centre of mass of the Universe. 1 2 3

    By geordief, June 24, 2018
    • 70 replies
    • 6.4k views
    • 
    • Mordred
    • June 27, 2018

21. A Closed Timelike Universe

    By ydoaPs, May 1, 2012
    • 5 replies
    • 1.6k views
    • 
    • Royston
    • May 2, 2012

22. A couple of black hole questions

    By Royston, September 30, 2005
    • 5 replies
    • 1.5k views
    • 
    • Royston
    • October 1, 2005

23. a couple of questions about dark matter

    By 36grit, December 20, 2011
    • 7 replies
    • 1.8k views
    • 
    • swansont
    • December 30, 2011

24. a couple questions about stars

    By brandoncotten, December 5, 2012
    • 14 replies
    • 2.3k views
    • 
    • mathematic
    • December 5, 2012

25. A definition of time 1 2

    By Greg H., June 4, 2012
    • 27 replies
    • 3.3k views
    • 
    • alpha2cen
    • June 11, 2012