Astronomy and Cosmology

3705 topics in this forum

1. how could the big bang happen?

   By sci-man, August 31, 2018
   • 14 replies
   • 2.2k views
   • 
   • Strange
   • October 6, 2018

2. Further Validity for the Big Bang?

   By beecee, October 5, 2018
   • 0 replies
   • 781 views
   • 
   • beecee
   • October 5, 2018

3. Need help in putting words to formulas

   By anti10188, October 4, 2018
   • 8 replies
   • 1k views
   • 
   • anti10188
   • October 4, 2018

4. Argument for discrete space

   By DannyTR, October 1, 2018
   • 8 replies
   • 1.3k views
   • 
   • swansont
   • October 2, 2018

5. The Measure Problem 1 2 3 4 6

   By DannyTR, September 21, 2018
   • 130 replies
   • 10.2k views
   • 
   • Phi for All
   • September 29, 2018

6. The Logic Of The Big Bang 1 2

   By PrimalMinister, September 24, 2018
   • 28 replies
   • 2.8k views
   • 
   • Airbrush
   • September 27, 2018

7. Why doesn't the resonance of the entire universe experience damping?

   By John Harmonic, September 26, 2018
   • 5 replies
   • 695 views
   • 
   • John Harmonic
   • September 26, 2018

8. Spacetime

   By PrimalMinister, September 24, 2018
   • 4 replies
   • 846 views
   • 
   • swansont
   • September 24, 2018

9. Logic

   By PrimalMinister, September 23, 2018
   • 9 replies
   • 1.1k views
   • 
   • studiot
   • September 23, 2018

10. Is this the final death knell for string theory and its derivatives?

    By beecee, September 14, 2018
    • 5 replies
    • 1.1k views
    • 
    • J.C.MacSwell
    • September 18, 2018

11. What is the maximum mass of a black hole? Could it be the source of the big bang?

    By László Hajós, September 14, 2018
    • 2 replies
    • 692 views
    • 
    • Strange
    • September 14, 2018

12. Is Dark Matter Real?

    By Itoero, August 22, 2018
    • 5 replies
    • 804 views
    • 
    • Strange
    • September 13, 2018

13. Mission to the center of the Sun

    By franco malgarini, September 6, 2018
    • 6 replies
    • 1.1k views
    • 
    • J.C.MacSwell
    • September 7, 2018

14. Pictures from solar eclips, showing bending of starlight?

    By Hello2, September 4, 2018
    • 3 replies
    • 829 views
    • 
    • Strange
    • September 4, 2018

15. Tides

    By elemental scorpion, September 3, 2018
    • 2 replies
    • 673 views
    • 
    • swansont
    • September 3, 2018

16. EM waves with astronomical wavelength

    By quiet, September 2, 2018
    • 12 replies
    • 1.2k views
    • 
    • John Cuthber
    • September 3, 2018

17. artificial gravity

    By Gian, August 29, 2018
    • 3 replies
    • 1k views
    • 
    • swansont
    • August 30, 2018

18. How important is Sun’s rotation on the orbits of the planets?

    By Hello2, August 24, 2018
    • 7 replies
    • 2.8k views
    • 
    • J.C.MacSwell
    • August 28, 2018

19. Do black holes the size of a human hand or even smaller exist

    By Achilles, August 23, 2018
    • 3 replies
    • 676 views
    • 
    • Strange
    • August 24, 2018

20. Reason for Establishing first Lunar Outpost:

    By beecee, August 21, 2018
    • 1 reply
    • 623 views
    • 
    • Airbrush
    • August 22, 2018

21. How do we know that the universe is expanding when it could be simply stretching?

    By Achilles, August 16, 2018
    • 5 replies
    • 882 views
    • 
    • beecee
    • August 20, 2018

22. Hubble paints picture of the evolving universe

    By beecee, August 16, 2018
    • 0 replies
    • 607 views
    • 
    • beecee
    • August 16, 2018

23. Possible Detection of Oort Clouds around other Stars.

    By beecee, August 16, 2018
    • 0 replies
    • 556 views
    • 
    • beecee
    • August 16, 2018

24. The idea that the universe may have started with a quantum fluctuation

    By geordief, August 12, 2018
    • 5 replies
    • 1.1k views
    • 
    • geordief
    • August 15, 2018

25. The maximum speed of transfer/propagation of information

    By geordief, August 1, 2018
    • 21 replies
    • 1.9k views
    • 
    • Eise
    • August 15, 2018