Physics, Space Science and Theories

1,726 topics in this forum

1. Replacement of sodium lights by full spectrum LEDS

   By N3ptune, April 20, 2016
   • 6 replies
   • 882 views
   • 
   • Aaron F Johnson
   • July 7, 2016

2. Two Dimensional Universe, the Holographic principle

   By Gary Anthony, January 29, 2013
   • 9 replies
   • 2k views
   • 
   • Rionaku
   • July 7, 2016

3. Hologram Theory

   By Rionaku, July 7, 2016   

   • hologram
   • theory
   • (and 9 more)

     Tagged with:

     • hologram
     • theory
     • universe
     • space
     • space time
     • grid
     • program
     • script
     • time
     • infinite
     • paralelle
   • 0 replies
   • 606 views
   • 
   • Rionaku
   • July 7, 2016

4. GENIUS - The Biography of Richard Feynman

   By cloudsweeper, July 3, 2016
   • 2 replies
   • 449 views
   • 
   • symesie04
   • July 4, 2016

5. Formation of singularities

   By Willem, June 30, 2016   

   • gravitational time dilation
   • schwarzschild radius
   • (and 2 more)

     Tagged with:

     • gravitational time dilation
     • schwarzschild radius
     • singularity
     • black hole
   • 1 reply
   • 650 views
   • 
   • andrew s
   • June 30, 2016

6. Another Graviitational Wave Results!

   By George Jones, June 15, 2016
   • 2 replies
   • 761 views
   • 
   • Tiki
   • June 19, 2016

7. The new world atlas of artificial night sky brightness

   By themos, June 11, 2016   

   • light pollution
   • 1 reply
   • 622 views
   • 
   • Martin Meredith
   • June 11, 2016

8. Understanding the Crescent Nebula

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

9. Why are stars mostly hydrogen?

   By AverageGuy, June 7, 2016
   • 19 replies
   • 1.8k views
   • 
   • SilverAstro
   • June 9, 2016

10. How quickly could precession happen?

    By jnb, June 7, 2016
    • 2 replies
    • 587 views
    • 
    • jnb
    • June 8, 2016

11. Asteroid 86666 (2000 FL 10)

    By barkis, June 5, 2016
    • 5 replies
    • 708 views
    • 
    • Dave In Vermont
    • June 7, 2016

12. Will Jupiter ever become a Star

    By Tinker1947, February 4, 2016
    • 15 replies
    • 1.3k views
    • 
    • glappkaeft
    • May 29, 2016

13. I just don't understand circuits... at all... 1 2

    By Ganymede12, May 27, 2016
    • 30 replies
    • 3.9k views
    • 
    • Ganymede12
    • May 29, 2016

14. Warping of space-time

    By Herzy, May 3, 2016
    • 9 replies
    • 1k views
    • 
    • ollypenrice
    • May 27, 2016

15. Hubble Constant

    By rockystar, May 22, 2016
    • 5 replies
    • 667 views
    • 
    • George Jones
    • May 25, 2016

16. Kepler's second law.

    By ollypenrice, May 24, 2016
    • 12 replies
    • 1.6k views
    • 
    • ajk
    • May 24, 2016

17. Galactic Coordinates of Earth on 01/01/2214

    By Eliza2Jane, June 29, 2014
    • 7 replies
    • 3.7k views
    • 
    • Knight of Clear Skies
    • May 20, 2016

18. The Cycle of the Universe 1 2

    By Sai Samarth, May 9, 2016
    • 26 replies
    • 1.7k views
    • 
    • Piero
    • May 17, 2016

19. A cool thought :) 1 2 3 4

    By Herzy, April 29, 2016
    • 75 replies
    • 3.3k views
    • 
    • johnfosteruk
    • May 10, 2016

20. Walking to the Center of the Galaxy

    By Correcamino, May 6, 2016   

    • thought experiment
    • 5 replies
    • 572 views
    • 
    • andrew s
    • May 10, 2016

21. where did it all go?

    By nicks90, April 25, 2016
    • 14 replies
    • 919 views
    • 
    • Sai Samarth
    • May 9, 2016

22. Time Travel Stephen Hawking style

    By Gazabone, April 24, 2016
    • 5 replies
    • 639 views
    • 
    • Sai Samarth
    • May 9, 2016

23. Why do RA and DEC change so much?

    By Stub Mandrel, April 26, 2016
    • 7 replies
    • 2.8k views
    • 
    • saac
    • April 28, 2016

24. Bridging the Gap

    By employee2-4601, April 18, 2016
    • 18 replies
    • 1.5k views
    • 
    • Physicist13
    • April 26, 2016

25. How do we know luminosity of a star from its spectral class

    By billyharris72, April 21, 2016
    • 6 replies
    • 910 views
    • 
    • saac
    • April 23, 2016