Astronomy and Cosmology

3708 topics in this forum

1. Apep

   By Bmpbmp1975, February 16, 2020
   • 20 replies
   • 1.8k views
   • 
   • Bmpbmp1975
   • February 16, 2020

2. Brown Dwarfs

   By Bmpbmp1975, February 14, 2020
   • 10 replies
   • 1.3k views
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   • Airbrush
   • February 16, 2020

3. Star older than universe

   By Bmpbmp1975, February 14, 2020
   • 9 replies
   • 1.5k views
   • 
   • dimreepr
   • February 16, 2020

4. Betelguese dimming

   By Bmpbmp1975, February 15, 2020
   • 3 replies
   • 799 views
   • 
   • swansont
   • February 16, 2020

5. Apep

   By Bmpbmp1975, February 15, 2020
   • 1 reply
   • 806 views
   • 
   • swansont
   • February 15, 2020

6. Dead galaxy questions 1 2 3 4 7

   By Bmpbmp1975, February 11, 2020
   • 156 replies
   • 20.3k views
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   • Phi for All
   • February 15, 2020

7. The Way to See Behind The Moon

   By Ritzier, February 5, 2020
   • 2 replies
   • 1k views
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   • Airbrush
   • February 15, 2020

8. Biggest Cannon in the Universe 3c186

   By Airbrush, November 30, 2019
   • 6 replies
   • 1.5k views
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   • Strange
   • February 11, 2020

9. Need help understanding what an alleged physicist is saying about Flat Earth

   By cisjd.del, January 31, 2020
   • 24 replies
   • 2.1k views
   • 
   • Markus Hanke
   • February 1, 2020

10. Big Bang and Dark Matter - doubts

    By ravell, January 27, 2020
    • 1 reply
    • 893 views
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    • swansont
    • January 27, 2020

11. Rocket propulsion and economics (split from Solve the climate crisis: A thought experiment)

    By LaurieAG, January 24, 2020
    • 1 reply
    • 674 views
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    • LaurieAG
    • January 24, 2020

12. Do we have any way of taming dark matter?

    By Calebeano, January 18, 2020
    • 3 replies
    • 998 views
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    • Endy0816
    • January 18, 2020

13. I finally found an accurate article on the speed of universal expansion 1 2 3

    By Angelo, January 10, 2020
    • 58 replies
    • 25.6k views
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    • MaximT
    • January 16, 2020

14. If there was a big bang 14 or so billion years ago and all mass

    By Angelo, January 7, 2020
    • 14 replies
    • 1.6k views
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    • Mordred
    • January 8, 2020

15. Plants in Super Habitable Exoplanets Could Look Purple

    By alfa015, December 31, 2019
    • 11 replies
    • 1.4k views
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    • Airbrush
    • January 4, 2020

16. Stellar engine

    By Curious layman, January 1, 2020
    • 15 replies
    • 2.6k views
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    • J.C.MacSwell
    • January 3, 2020

17. Can we see a correlation between the Cosmic microwave background map and the visible universe?

    By Blind Watchmaker, December 23, 2019
    • 14 replies
    • 1.7k views
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    • iNow
    • December 24, 2019

18. Size a solution to Fermi Paradox? 1 2 3 4

    By coderage9100, November 16, 2018
    • 98 replies
    • 12.2k views
    • 
    • dimreepr
    • December 24, 2019

19. What was the Singularity point before the Big Bang?

    By Blind Watchmaker, December 23, 2019
    • 7 replies
    • 1.3k views
    • 
    • Strange
    • December 24, 2019

20. Inside The 24/7 Search For Another Habitable Planet Within 100 Light Years Of Earth

    By alfa015, November 26, 2019
    • 1 reply
    • 841 views
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    • Airbrush
    • November 28, 2019

21. The Square Kilometre Array

    By alfa015, November 15, 2019
    • 0 replies
    • 946 views
    • 
    • alfa015
    • November 15, 2019

22. Sun Black hole

    By Lizwi, November 5, 2019
    • 2 replies
    • 946 views
    • 
    • MigL
    • November 5, 2019

23. Expansion (split from Empty space inside galaxies must be different than empty space outside of them)

    By geordief, November 1, 2019
    • 10 replies
    • 1.4k views
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    • swansont
    • November 4, 2019

24. How strong are pulsar winds?

    By SilentSky23, October 29, 2019
    • 5 replies
    • 1.2k views
    • 
    • swansont
    • October 29, 2019

25. Comet or Asteroid smashes into OUR moon!

    By EastNamibianSpaceMiningCo, October 26, 2019
    • 9 replies
    • 1.5k views
    • 
    • Airbrush
    • October 28, 2019