Physics, Space Science and Theories

1,709 topics in this forum

1. Can Dry Ice be used as a fuel source? 1 2

   By Patrick2568422, May 26, 2017   

   • help
   • chemisty
   • (and 2 more)

     Tagged with:

     • help
     • chemisty
     • physics
     • energy
   • 30 replies
   • 4.3k views
   • 
   • JeremyS
   • May 28, 2017

2. CERN Plan for 100Tev Accelerator

   By Macavity, May 1, 2017
   • 15 replies
   • 1.6k views
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   • N3ptune
   • May 25, 2017

3. Superluminal motion

   By johnfosteruk, May 6, 2017
   • 21 replies
   • 1.1k views
   • 
   • Ant
   • May 15, 2017

4. What was the star type that our solar system was born from its ashes?

   By Earl, May 5, 2017
   • 9 replies
   • 1.3k views
   • 
   • robin_astro
   • May 7, 2017

5. RIP Pierre Binétruy

   By RichM63, April 26, 2017
   • 5 replies
   • 1.1k views
   • 
   • laudropb
   • April 28, 2017

6. Universe's Expansion and Contraction

   By Kenn, March 16, 2017
   • 23 replies
   • 2.4k views
   • 
   • impactcrater
   • April 18, 2017

7. Light curves and habitability

   By caballerodiez91, April 14, 2017
   • 3 replies
   • 525 views
   • 
   • caballerodiez91
   • April 17, 2017

8. Enceladus

   By Charic, April 14, 2017
   • 4 replies
   • 602 views
   • 
   • Macavity
   • April 17, 2017

9. Spiraling into a black hole? Really?

   By kirkster501, April 14, 2017
   • 2 replies
   • 612 views
   • 
   • Tiki
   • April 15, 2017

10. Habitability around stars with spots

    By caballerodiez91, April 12, 2017
    • 4 replies
    • 582 views
    • 
    • caballerodiez91
    • April 13, 2017

11. Big Bang's Loop Theory 1 2

    By Kraunboerg, August 30, 2013
    • 46 replies
    • 4.8k views
    • 
    • andrew s
    • April 12, 2017

12. Expanding Universe Question 1 2

    By Tommohawk, February 15, 2017
    • 43 replies
    • 2.7k views
    • 
    • impactcrater
    • April 7, 2017

13. Walter Lewin

    By jabeoo1, December 18, 2016
    • 6 replies
    • 1.5k views
    • 
    • impactcrater
    • April 7, 2017

14. New Theory that Joins Black Holes, Gravitational Waves & Axions

    By Uhwaz, March 30, 2017
    • 1 reply
    • 560 views
    • 
    • andrew s
    • March 31, 2017

15. Google major fail

    By billyharris72, March 6, 2017
    • 4 replies
    • 667 views
    • 
    • Vox45
    • March 30, 2017

16. 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
    • 1.1k views
    • 
    • ollypenrice
    • March 29, 2017

17. aaplus - calculating planet altitudes, etc...

    By furrysocks2, February 12, 2017
    • 13 replies
    • 2.2k views
    • 
    • furrysocks2
    • March 28, 2017

18. Kepler and orbit of mars

    By Nova12, March 24, 2017   

    • mars
    • orbit
    • (and 1 more)

      Tagged with:

      • mars
      • orbit
      • kepler
    • 2 replies
    • 784 views
    • 
    • JoeP
    • March 25, 2017

19. Acceleration of the Universe

    By Variable, March 12, 2017
    • 8 replies
    • 1.2k views
    • 
    • sonic190178
    • March 21, 2017

20. Stellar occultations of planetary rings

    By furrysocks2, March 21, 2017
    • 0 replies
    • 397 views
    • 
    • furrysocks2
    • March 21, 2017

21. black holes effect gravitational waves? Travelling Gravitational Waves

    By Fosforus, March 14, 2017   

    • ligo
    • gravitational waves
    • (and 2 more)

      Tagged with:

      • ligo
      • gravitational waves
      • black holes
      • mapping black holes
    • 5 replies
    • 795 views
    • 
    • SilverAstro
    • March 15, 2017

22. Planet 9.

    By StormAurora, March 14, 2017
    • 8 replies
    • 1k views
    • 
    • Ravenous
    • March 15, 2017

23. Kepler, K2 and TRAPPIST-1

    By furrysocks2, March 7, 2017
    • 14 replies
    • 2.8k views
    • 
    • furrysocks2
    • March 14, 2017

24. Aliens?! 1 2

    By Gino Arcari, February 5, 2017
    • 48 replies
    • 2.5k views
    • 
    • Paul M
    • March 14, 2017

25. Observed brightness of the moon

    By 101nut, March 9, 2017
    • 4 replies
    • 738 views
    • 
    • Tiki
    • March 9, 2017