Physics, Space Science and Theories

1,513 topics in this forum

1. True colour of The Sun?

   By MYLUCKYSTARS, May 11, 2014
   • 15 replies
   • 2.3k views
   • 
   • acey
   • June 12, 2014

2. True satellite vs captive body?

   By boboco, January 16, 2011
   • 4 replies
   • 561 views
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   • brianb
   • January 24, 2011

3. Try to get your brain around this.

   By BargeGazer, December 29, 2012
   • 9 replies
   • 1k views
   • 
   • stevegaze
   • January 31, 2013

4. Twin moons

   By Layor, June 11, 2010
   • 3 replies
   • 1.1k views
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   • yesyes
   • July 8, 2010

5. Two Dimensional Universe, the Holographic principle

   By Gary Anthony, January 29, 2013
   • 9 replies
   • 1.9k views
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   • Rionaku
   • July 7, 2016

6. Two Planets in Same Orbit?

   By Sunshine, January 10, 2020
   • 9 replies
   • 832 views
   • 
   • leibek
   • April 10, 2020

7. Two Questions About The Speed Of Light

   By gordyb, December 10, 2010
   • 3 replies
   • 766 views
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   • acey
   • December 14, 2010

8. Two Random Conundrums for you...

   By Macavity, April 15, 2016
   • 12 replies
   • 903 views
   • 
   • saac
   • April 16, 2016

9. Type 1a supernovas are not all the same intrinsic brightness

   By mdstuart, June 23, 2011
   • 6 replies
   • 1.1k views
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   • ollypenrice
   • June 24, 2011

10. Type Ia supernovae and the age of the component stars

    By jnb, November 6, 2016
    • 2 replies
    • 392 views
    • 
    • Knight of Clear Skies
    • November 6, 2016

11. Typical nebulae sizes and masses

    By jnb, July 30, 2018
    • 7 replies
    • 378 views
    • 
    • vlaiv
    • July 30, 2018

12. UCL London Certificate in Astronomy?

    By kbrown, September 7, 2018
    • 4 replies
    • 604 views
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    • Gfamily
    • September 8, 2018

13. UFO's 1 2 3 4 7

    By Guest telescope4u, January 4, 2006
    • 155 replies
    • 11.6k views
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    • Kai
    • December 20, 2008

14. UK funding for E-ELT instruments

    By FraserClarke, October 3, 2011
    • 0 replies
    • 456 views
    • 
    • FraserClarke
    • October 3, 2011

15. Ultima Thule Surprise.

    By barkis, February 11, 2019
    • 5 replies
    • 342 views
    • 
    • Sunshine
    • February 11, 2019

16. Uncertainty principle.

    By jason.p, March 23, 2013
    • 18 replies
    • 993 views
    • 
    • mytola
    • March 29, 2013

17. Understanding black holes and galaxies

    By Highburymark, January 27, 2018
    • 14 replies
    • 634 views
    • 
    • Ags
    • February 12, 2018

18. Understanding the Crescent Nebula

    By symesie04, June 10, 2016
    • 2 replies
    • 452 views
    • 
    • andrew s
    • June 10, 2016

19. Understanding the Strong Force

    By DarkStar7, October 21, 2011
    • 9 replies
    • 843 views
    • 
    • Macavity
    • October 22, 2011

20. Units of angle and measurement *** (troll warning) ****

    By SteveBz, August 3, 2016   

    • radians steradians megaparsecs.
    • 22 replies
    • 827 views
    • 
    • saac
    • August 16, 2016

21. Universe

    By Ray02, October 15, 2015
    • 21 replies
    • 1.6k views
    • 
    • nameunknown
    • October 29, 2015

22. Universe 1 2 3 4 8

    By Vince1963, March 23, 2012
    • 193 replies
    • 9.1k views
    • 
    • Groucho Ben
    • July 16, 2012

23. Universe

    By CedrikG, April 10, 2015
    • 20 replies
    • 1.4k views
    • 
    • cresskh
    • April 29, 2015

24. universe center

    By Milliways, December 2, 2008
    • 2 replies
    • 666 views
    • 
    • ollypenrice
    • December 16, 2008

25. Universe evolution created in lab - BBC news 7 May 14

    By Crebles, May 7, 2014
    • 1 reply
    • 573 views
    • 
    • Kropster
    • May 7, 2014