Astronomy and Cosmology

3712 topics in this forum

1. Testing General Relativity and Gravity:

   By beecee, April 17, 2018
   • 0 replies
   • 619 views
   • 
   • beecee
   • April 17, 2018

2. Artificial Gravity on the ISS 1 2

   By Airbrush, April 7, 2018
   • 29 replies
   • 3k views
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   • Airbrush
   • April 16, 2018

3. Space is the ultimate antecedent 1 2

   By gwb, March 26, 2018
   • 32 replies
   • 4k views
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   • Mordred
   • April 13, 2018

4. Basic rule for the Atmospheric Reentry Time of non powered Glider Class vehicles

   By LaurieAG, April 7, 2018
   • 3 replies
   • 916 views
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   • LaurieAG
   • April 11, 2018

5. Handbook for New Actors in Space

   By Phi for All, April 10, 2018
   • 0 replies
   • 978 views
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   • Phi for All
   • April 10, 2018

6. More evidence for Dark Matter:

   By beecee, March 28, 2018
   • 16 replies
   • 2.1k views
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   • Strange
   • April 9, 2018

7. Astronomers find 72 bright and fast explosions

   By beecee, April 5, 2018
   • 0 replies
   • 605 views
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   • beecee
   • April 5, 2018

8. engineering and cosmology

   By fencewalker, April 4, 2018
   • 7 replies
   • 974 views
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   • Airbrush
   • April 5, 2018

9. An unknown source of planetary energy? 1 2 3 4

   By Moreno, September 15, 2017
   • 91 replies
   • 10.7k views
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   • jlowe22
   • March 31, 2018

10. The physics of Peter F. Hamilton's Nova Bombs?

    By Fanghur, February 2, 2018
    • 3 replies
    • 2.3k views
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    • Fanghur
    • March 30, 2018

11. Part of the Big Bang perplexes me 1 2

    By gwb, March 16, 2018
    • 33 replies
    • 3.5k views
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    • Airbrush
    • March 28, 2018

12. Photons

    By Much Ado, March 26, 2018
    • 11 replies
    • 1.6k views
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    • Area54
    • March 27, 2018

13. I created this space composition with my VFX software, and wonder if it looks like something known. if yes, what's the name of the phenomenon

    By mtruchon, March 14, 2018
    • 2 replies
    • 727 views
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    • mtruchon
    • March 14, 2018

14. Astronomy laser pointers

    By wallflash, March 2, 2018
    • 6 replies
    • 1.3k views
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    • John Cuthber
    • March 4, 2018

15. Water, water, everywhere!!

    By beecee, March 1, 2018
    • 0 replies
    • 664 views
    • 
    • beecee
    • March 1, 2018

16. Presentation: Worldwide Digital Sundial

    By angelsun, February 28, 2018
    • 0 replies
    • 609 views
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    • angelsun
    • February 28, 2018

17. Black Holes and Gaseous Giants:

    By beecee, February 28, 2018
    • 0 replies
    • 723 views
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    • beecee
    • February 28, 2018

18. Observation of the earliest stars

    By Strange, February 28, 2018
    • 1 reply
    • 792 views
    • 
    • beecee
    • February 28, 2018

19. Your theories on anti-matter? 1 2

    By nightsky, January 26, 2018
    • 26 replies
    • 2.9k views
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    • Strange
    • February 28, 2018

20. How can you measure distances across space?

    By ManifestDragon, February 26, 2018
    • 2 replies
    • 825 views
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    • Janus
    • February 26, 2018

21. Life on other planets; is water really the primary factor?

    By dstebbins, February 4, 2018
    • 24 replies
    • 2k views
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    • Moontanman
    • February 25, 2018

22. Another test for Einstein:

    By beecee, February 22, 2018
    • 0 replies
    • 658 views
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    • beecee
    • February 22, 2018

23. Tidal Gravitational Effects and Frame Dragging:

    By beecee, February 20, 2018
    • 0 replies
    • 728 views
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    • beecee
    • February 20, 2018

24. Ultra Massive Black Holes:

    By beecee, February 20, 2018
    • 0 replies
    • 639 views
    • 
    • beecee
    • February 20, 2018

25. The Nature of Time

    By Rumfrd, February 15, 2018
    • 1 reply
    • 805 views
    • 
    • hypervalent_iodine
    • February 15, 2018