Astronomy and Cosmology

3712 topics in this forum

1. Where does gravity (most likely) come from?

   By dordle-loddle, July 30, 2017
   • 16 replies
   • 3.5k views
   • 
   • Airbrush
   • February 13, 2018

2. Light and black holes

   By billasker, February 12, 2018
   • 2 replies
   • 932 views
   • 
   • beecee
   • February 13, 2018

3. New White Dwarf Mass Limit

   By T. McGrath, February 2, 2018
   • 4 replies
   • 1.5k views
   • 
   • T. McGrath
   • February 7, 2018

4. Deuterium star?

   By Moontanman, February 7, 2018
   • 5 replies
   • 2.3k views
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   • dimreepr
   • February 7, 2018

5. Big Bang - doubts ?

   By ravell, January 21, 2018
   • 9 replies
   • 2.3k views
   • 
   • Strange
   • January 28, 2018

6. Is space folding a good method of space travel (if it is for real) 1 2

   By Lekgolo555, February 10, 2007
   • 42 replies
   • 42.5k views
   • 
   • Feralwrath
   • January 22, 2018

7. Can you witness the birth of the Universe?

   By Madheart918, January 8, 2018
   • 15 replies
   • 2.5k views
   • 
   • MigL
   • January 16, 2018

8. Fast Rotating Asteroids

   By GeeKay, January 15, 2018
   • 3 replies
   • 1.5k views
   • 
   • mistermack
   • January 16, 2018

9. Exoplanet discoveries 1 2

   By Strange, December 27, 2017
   • 44 replies
   • 5k views
   • 
   • Raider5678
   • January 12, 2018

10. Why is the observable universe flat? 1 2

    By Raider5678, January 2, 2018
    • 26 replies
    • 3.8k views
    • 
    • Roamer
    • January 4, 2018

11. Mars Clock Delay

    By Raider5678, January 4, 2018
    • 4 replies
    • 926 views
    • 
    • Janus
    • January 4, 2018

12. Some questions about the moon, please give directions

    By zands, January 2, 2018
    • 5 replies
    • 1k views
    • 
    • interested
    • January 4, 2018

13. Expansion and Inflation

    By geordief, December 31, 2017
    • 19 replies
    • 1.9k views
    • 
    • Mordred
    • January 2, 2018

14. Why is the sky in the night Black???...

    By Koni, December 30, 2017
    • 7 replies
    • 1.3k views
    • 
    • Koni
    • December 31, 2017

15. Space a constant, singularities all over the universe

    By TTski, December 31, 2017
    • 2 replies
    • 1.1k views
    • 
    • studiot
    • December 31, 2017

16. White Hole Decay becoming the higg’s field scalar 0?

    By Bigg’s Boson, December 28, 2017
    • 3 replies
    • 2.8k views
    • 
    • Mordred
    • December 28, 2017

17. Magnetic Reconnection & Atmospheric Currents

    By Unified Field, December 17, 2017
    • 15 replies
    • 2.1k views
    • 
    • Unified Field
    • December 24, 2017

18. Variation on Solar System Formation:

    By beecee, December 23, 2017
    • 0 replies
    • 686 views
    • 
    • beecee
    • December 23, 2017

19. Dark Matter or Dark Force 1 2 3

    By TakenItSeriously, December 1, 2017
    • 73 replies
    • 6.8k views
    • 
    • LaurieAG
    • December 19, 2017

20. What is the methodology for concluding accelerated expansion?

    By Cosmo_Ken, December 12, 2017
    • 6 replies
    • 1.7k views
    • 
    • T. McGrath
    • December 14, 2017

21. What color is the sky on Mars?

    By Cosmo_Ken, December 2, 2017
    • 9 replies
    • 2.3k views
    • 
    • Cosmo_Ken
    • December 12, 2017

22. Action Dynamics of the Local Supercluster

    By T. McGrath, December 9, 2017
    • 0 replies
    • 670 views
    • 
    • T. McGrath
    • December 9, 2017

23. E=mc2

    By Tub, December 6, 2017
    • 2 replies
    • 1k views
    • 
    • Tub
    • December 6, 2017

24. Which galaxies will become gravitationally bound to us after our collision with Andromeda? 1 2

    By MarkE, November 11, 2017
    • 34 replies
    • 3.3k views
    • 
    • Mordred
    • November 25, 2017

25. Conservation of energy/mass

    By MarkE, November 22, 2017
    • 3 replies
    • 1k views
    • 
    • MarkE
    • November 24, 2017