Astronomy and Cosmology

3685 topics in this forum

1. ISS space station orbit – calculation discrepancy

   By ravell, October 25, 2021
   • 0 replies
   • 469 views
   • 
   • ravell
   • October 25, 2021

2. Tidal locking in a Red Dwarf System - How would large moon affect?

   By Althistorybuff, September 27, 2021
   • 4 replies
   • 992 views
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   • Airbrush
   • October 5, 2021

3. Canary Islands Telescopes and Volcanic eruptions::

   By beecee, September 21, 2021
   • 2 replies
   • 1.7k views
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   • beecee
   • September 21, 2021

4. Lorentz invariant gravity (split from Is Gravity a Force?)

   By SergUpstart, September 1, 2021
   • 1 reply
   • 552 views
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   • swansont
   • September 1, 2021

5. Redshifted Light

   By Muster Mark, August 31, 2021
   • 1 reply
   • 637 views
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   • SergUpstart
   • August 31, 2021

6. What kind of element could never be naturally found in a star?

   By Maximum7, August 30, 2021
   • 2 replies
   • 693 views
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   • swansont
   • August 30, 2021

7. Are their fossils on mars?

   By sta895, July 9, 2021
   • 8 replies
   • 1.2k views
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   • Country Boy
   • August 23, 2021

8. Steelworks of Saturn

   By Gian, August 12, 2021
   • 13 replies
   • 1.3k views
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   • Airbrush
   • August 16, 2021

9. Antimatter

   By Cosmicus, August 13, 2021
   • 7 replies
   • 1k views
   • 
   • joigus
   • August 13, 2021

10. Musing About Topology and Implications

    By Caldrail, August 10, 2021
    • 0 replies
    • 529 views
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    • Caldrail
    • August 10, 2021

11. Questions: differences between M-theory & Multiverse?

    By storyteller, August 6, 2021
    • 9 replies
    • 1.2k views
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    • SergUpstart
    • August 7, 2021

12. Relativity with regard to CMBR and galaxy types 1 2

    By MarkE, July 21, 2021
    • 26 replies
    • 2.2k views
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    • beecee
    • August 6, 2021

13. Moon Landing 360

    By Endy0816, August 5, 2021
    • 1 reply
    • 630 views
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    • joigus
    • August 5, 2021

14. Do you truly believe modern scientists have written the end of this story? 1 2

    By OdinSon2k11, June 6, 2021
    • 41 replies
    • 3.2k views
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    • Endy0816
    • August 3, 2021

15. Spacetime from a different perspective

    By PakoThePlatypus, July 20, 2021
    • 3 replies
    • 776 views
    • 
    • Intoscience
    • July 21, 2021

16. Friedmann Equations connection to Einstein’s GR Field Equations...explain

    By storyteller, July 11, 2021
    • 8 replies
    • 1.5k views
    • 
    • studiot
    • July 12, 2021

17. Bioreactor for Mars Base Power

    By DeepSeaBase, July 7, 2021
    • 4 replies
    • 913 views
    • 
    • Ken Fabian
    • July 10, 2021

18. These are questions i NEED to know the answers to

    By sta895, July 9, 2021
    • 2 replies
    • 756 views
    • 
    • beecee
    • July 9, 2021

19. Cosmic Microwave Background disprove 'Big Bang'

    By george909, March 29, 2021
    • 9 replies
    • 1.5k views
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    • swansont
    • July 1, 2021

20. Does dark energy obey the inverse-square law?

    By MarkE, June 28, 2021
    • 23 replies
    • 1.7k views
    • 
    • swansont
    • June 29, 2021

21. Could singularities be broken by space “pressure“?

    By Thoughtless, June 27, 2021
    • 3 replies
    • 774 views
    • 
    • Thoughtless
    • June 28, 2021

22. The strong force question/proposal

    By QuantumT, June 12, 2021
    • 5 replies
    • 1.2k views
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    • QuantumT
    • June 23, 2021

23. Appropriate Signal to Noise Ratio for CMB Measurements? (Wmap, Cobe, Planck)

    By The victorious truther, June 19, 2021
    • 0 replies
    • 604 views
    • 
    • The victorious truther
    • June 19, 2021

24. Interesting space facts

    By ethelbertmagnus, June 10, 2021
    • 2 replies
    • 692 views
    • 
    • beecee
    • June 10, 2021

25. How does General Relativity predict zero volume/infinite density of Black holes?

    By Nigel Denning, May 28, 2021
    • 2 replies
    • 761 views
    • 
    • swansont
    • May 28, 2021