Physics, Space Science and Theories

1,706 topics in this forum

1. Richard Feynman: A Comprehensive list of Books & Videos 1 2

   By Feynman, January 12, 2013
   • 34 replies
   • 19.2k views
   • 
   • saac
   • 4 hours ago

2. Open university 1 2 3 4 9

   By meteoriot, March 29, 2011
   • 205 replies
   • 19.9k views
   • 
   • palebluedot
   • January 27, 2012

3. Does the Gravity from jupiter affects earth in any way?

   By lulaz, November 21, 2010
   • 16 replies
   • 19.6k views
   • 
   • brantuk
   • December 28, 2010

4. The Top 10 Unanswered Questions in the Universe

   By George Jones, January 3, 2010
   • 0 replies
   • 18k views
   • 
   • George Jones
   • January 3, 2010

5. Where to get an orrery

   By SoulFrenzy, December 13, 2012
   • 10 replies
   • 17k views
   • 
   • JB80
   • December 13, 2012

6. Great Global Warming Swindle (Ch4 last night) 1 2 3 4 9

   By G1ZmO, March 9, 2007
   • 217 replies
   • 15.9k views
   • 
   • Jamie
   • February 5, 2008

7. Calculating the Flux Ratio of two stars

   By Kellytabares, October 28, 2015
   • 4 replies
   • 15.5k views
   • 
   • robin_astro
   • December 13, 2015

8. So what would really happen if aliens did make contact? 1 2 3 4

   By Trickystar1, February 18, 2012
   • 88 replies
   • 14.7k views
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   • MAN or ASTROMAN
   • July 17, 2015

9. Is our Universe 13.7 billion years old ? I'm not quite convinced 1 2 3 4 15

   By Nigel G, July 8, 2016
   • 355 replies
   • 13.3k views
   • 
   • SonnyE
   • December 15, 2016

10. UFO's 1 2 3 4 7

    By Guest telescope4u, January 4, 2006
    • 155 replies
    • 13.2k views
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    • Kai
    • December 20, 2008

11. Neutrinos moving faster than light? 1 2 3 4 8

    By ncjunk, September 22, 2011
    • 180 replies
    • 12.1k views
    • 
    • Ronnie67
    • June 10, 2012

12. The Speed of Light, is it a relative thing? 1 2 3 4 9

    By Delasaurus, October 16, 2017
    • 206 replies
    • 11.6k views
    • 
    • Delasaurus
    • October 26, 2017

13. Quite a nice Hertzsprung-Russell diagram 1 2

    By Cath, June 18, 2013
    • 31 replies
    • 11.5k views
    • 
    • jabeoo1
    • January 1, 2014

14. Can anyone explain 'Space Time' in simple terms?

    By mylatestwhim, April 22, 2011
    • 10 replies
    • 11.2k views
    • 
    • Tomjo59
    • April 28, 2011

15. Physics of hair gel: is it a solid or a liquid?

    By Syntarsus, January 19, 2012
    • 11 replies
    • 11.1k views
    • 
    • Macavity
    • January 20, 2012

16. Universe 1 2 3 4 8

    By Vince1963, March 23, 2012
    • 193 replies
    • 10.7k views
    • 
    • Groucho Ben
    • July 16, 2012

17. What allows an electromegnetic wave to oscillate? 1 2

    By haitch, November 20, 2012
    • 27 replies
    • 10.5k views
    • 
    • J_M_Franklin
    • December 4, 2012

18. Recommended Astrophysics books?

    By rwg, January 25, 2010
    • 10 replies
    • 10.4k views
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    • rwg
    • February 3, 2010

19. Is the Moon moving away from Earth due to big bang inflation? 1 2 3 4

    By spartan45, September 24, 2014
    • 97 replies
    • 10.4k views
    • 
    • Physicist13
    • March 1, 2016

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

    By hwsoderlund, May 17, 2012
    • 58 replies
    • 10k views
    • 
    • Wyvern
    • August 25, 2014

21. Why is the Solar system flat?

    By Ursa Major, May 31, 2011
    • 10 replies
    • 9.4k views
    • 
    • jamespels
    • June 2, 2011

22. If the universe is infinite why can't i see stars everywhere I look? 1 2 3 4 5

    By Astrodob, August 19, 2014
    • 101 replies
    • 8.8k views
    • 
    • Budding Star Gazer
    • January 3, 2015

23. Aliens- do they exist?? 1 2 3 4 8

    By Some Dude With A Mak- Cass, October 30, 2017   

    • aliens
    • discussion
    • (and 1 more)

      Tagged with:

      • aliens
      • discussion
      • off topic
    • 179 replies
    • 8.7k views
    • 
    • Ben the Ignorant
    • May 21, 2018

24. Are we alone in the universe? 1 2 3 4 11

    By goddasgirl2021, September 2, 2022
    • 253 replies
    • 8.6k views
    • 
    • andrew s
    • December 17, 2022

25. The large hadron collider? 1 2 3 4 5

    By dave1978, September 3, 2008
    • 113 replies
    • 8.5k views
    • 
    • ChrisEdu
    • November 18, 2008