Physics, Space Science and Theories

1,509 topics in this forum

1. What are people's thoughts on this?

   By mikey32shaw, November 19, 2013
   • 6 replies
   • 688 views
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   • mikey32shaw
   • November 20, 2013

2. What came before the Big Bang 1 2 3 4 6

   By Scotti G, May 21, 2020
   • 136 replies
   • 2.8k views
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   • saac
   • June 10, 2020

3. What causes elements to be radioactive?

   By JamesF, January 11, 2013
   • 5 replies
   • 955 views
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   • JulianO
   • January 12, 2013

4. What causes the tides? 1 2

   By JamesF, October 21, 2020
   • 29 replies
   • 761 views
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   • StevieDvd
   • December 19, 2020

5. What exactly are we looking at?

   By Belcher, November 6, 2012
   • 9 replies
   • 773 views
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   • JulianO
   • November 13, 2012

6. What happens if Betelgeuse goes supernova? 1 2 3

   By hwsoderlund, May 17, 2012
   • 58 replies
   • 8.9k views
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   • Wyvern
   • August 25, 2014

7. What happens if the universe expands faster than the speed of light?

   By Patrick2568422, March 27, 2017   

   • help
   • physics
   • (and 2 more)

     Tagged with:

     • help
     • physics
     • cosmology
     • question
   • 11 replies
   • 899 views
   • 
   • ollypenrice
   • March 29, 2017

8. What happens when all the energy is used up?

   By spurius, May 23, 2013
   • 17 replies
   • 2.1k views
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   • Northern Soul man
   • May 31, 2013

9. What if Mars collided with Jupiter?

   By Paz, February 20, 2017
   • 13 replies
   • 952 views
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   • newbie alert
   • December 17, 2017

10. What if the rules of physics are NOT the same everyywhere? 1 2 3 4

    By kirkster501, March 30, 2013
    • 88 replies
    • 4.8k views
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    • Neuromante
    • August 12, 2013

11. What imager does Hubble Space Telescope use?

    By Dipper, September 20, 2012
    • 14 replies
    • 511 views
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    • Auntystatic
    • September 21, 2012

12. what is a dark energy??

    By Robstargazer15, February 2, 2013
    • 23 replies
    • 1.1k views
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    • symesie04
    • February 4, 2013

13. What is a force ? 1 2

    By Cath, August 25, 2014
    • 31 replies
    • 1.8k views
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    • PM_ME_URANUS
    • September 2, 2014

14. What Is A Quark Star?

    By gordyb, November 5, 2010
    • 7 replies
    • 1.3k views
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    • NeutrinoWave
    • November 14, 2011

15. What is a singularity?

    By jetstream, December 18, 2013
    • 12 replies
    • 2.6k views
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    • spurius
    • December 29, 2013

16. What is a Zero Rest Mass Photon

    By NeutrinoWave, November 13, 2011
    • 9 replies
    • 796 views
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    • smolloy
    • November 18, 2011

17. What is Gravity?!? The conceptual and short history on the problem of gravity: Part 1 - Newton

    By ThomasC, June 24, 2019
    • 0 replies
    • 292 views
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    • ThomasC
    • June 24, 2019

18. What is just beyond that farthest galaxy in Hubbles deep field?

    By Andymac79, November 13, 2011
    • 2 replies
    • 969 views
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    • NeutrinoWave
    • November 13, 2011

19. What is Space?

    By stevepeverall, September 4, 2013
    • 24 replies
    • 1.3k views
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    • Ronnie67
    • September 9, 2013

20. What is the Mass / Energy of a Cubic Lightyear of empty space? 1 2

    By Earl, August 29, 2012
    • 27 replies
    • 2.1k views
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    • grey
    • September 13, 2012

21. What is the/a Singularity

    By Ursa Major, June 18, 2011
    • 24 replies
    • 1.8k views
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    • Staypuft
    • July 11, 2011

22. what is your favorite history or science subject to watch on tv?

    By Suniyasolly, July 4, 2010
    • 22 replies
    • 1.3k views
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    • Sam
    • January 1, 2011

23. What Next

    By dcwales2012, February 24, 2012
    • 4 replies
    • 612 views
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    • STAGAZER
    • March 7, 2012

24. What or why are globular clusters

    By Sparrow, May 8, 2010
    • 8 replies
    • 1k views
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    • FraserClarke
    • May 9, 2010

25. What the Japanese are planning to do....of the Moon

    By Rosanella, June 3, 2010
    • 24 replies
    • 1.2k views
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    • Photosbykev
    • September 28, 2010