Physics, Space Science and Theories

1,707 topics in this forum

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

   By Feynman, January 12, 2013
   • 34 replies
   • 19.3k views
   • 
   • saac
   • April 26

2. 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
   • 13.4k views
   • 
   • SonnyE
   • December 15, 2016

3. 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

4. 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

5. 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

6. Open university 1 2 3 4 9

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

7. Big Bang theory just does not make sense 1 2 3 4 9

   By mnmcreator, August 22, 2023
   • 201 replies
   • 5.7k views
   • 
   • ollypenrice
   • September 5, 2023

8. Universe 1 2 3 4 8

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

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

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

10. 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

11. “We don’t really know the speed of light” 1 2 3 4 7

    By Ouroboros, January 18, 2021
    • 160 replies
    • 7.5k views
    • 
    • saac
    • March 2, 2023

12. UFO's 1 2 3 4 7

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

13. Musings on Time Travel 1 2 3 4 7

    By Mr Spock, March 17, 2022
    • 154 replies
    • 7.4k views
    • 
    • saac
    • April 13, 2022

14. Congressional Oversight Committee on UAP's 1 2 3 4 7

    By 900SL, July 26, 2023
    • 153 replies
    • 4.1k views
    • 
    • Mr H in Yorkshire
    • August 9, 2023

15. 'Fine tuning' the universe... 1 2 3 4 6

    By ollypenrice, March 3, 2023
    • 147 replies
    • 3.8k views
    • 
    • Macavity
    • March 8, 2023

16. Definition Of Time? 1 2 3 4 6

    By Mr Q, April 6, 2012
    • 139 replies
    • 6.8k views
    • 
    • Cath
    • June 16, 2012

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

    By Scotti G, May 21, 2020
    • 136 replies
    • 4.9k views
    • 
    • saac
    • June 10, 2020

18. What does nothing look like? 1 2 3 4 6

    By VirgoCluster25, April 9, 2023
    • 131 replies
    • 4.9k views
    • 
    • saac
    • June 12, 2023

19. Artificial intelligence? 1 2 3 4 6

    By ollypenrice, May 30, 2010
    • 130 replies
    • 6.2k views
    • 
    • ollypenrice
    • June 7, 2010

20. The reality of time, Lee Smolin lecture. 1 2 3 4 5

    By ollypenrice, November 26, 2018
    • 120 replies
    • 3.2k views
    • 
    • vlaiv
    • December 11, 2018

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

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

22. Entangled particles used for communication 1 2 3 4 5

    By Michael Kieth Adams, March 24, 2021
    • 108 replies
    • 3.7k views
    • 
    • reezeh
    • April 5, 2021

23. Scientific method 1 2 3 4 5

    By Laurie61, January 16, 2015
    • 106 replies
    • 6.4k views
    • 
    • Piero
    • February 12, 2015

24. 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
    • 8.9k views
    • 
    • Budding Star Gazer
    • January 3, 2015

25. Gravity is Dark matter??????????? 1 2 3 4 5

    By skeldon, February 25, 2016
    • 100 replies
    • 4.8k views
    • 
    • Scott
    • March 15, 2016