Astronomy and Cosmology

3430 topics in this forum

1. When jupiter and saturn get near earth...

   By Lan Todak, March 31
   • 2 replies
   • 242 views
   • 
   • pzkpfw
   • March 31

2. Biggest Bang Since Big Bang

   By Airbrush, March 8
   • 1 reply
   • 314 views
   • 
   • Airbrush
   • March 26

3. Bob Lazar, Area 51, & Flying Saucers

   By Airbrush, March 16
   • 1 reply
   • 276 views
   • 
   • Curious layman
   • March 17

4. Astronomers will be able to image Earth-like planets by 2025

   By alfa015, February 22
   • 3 replies
   • 297 views
   • 
   • Curious layman
   • March 13

5. Thomson opacity (split from I finally found an accurate article on the speed of universal expansion) 1 2

   By TEFLing, March 1
   • 32 replies
   • 14429 views
   • 
   • Mordred
   • March 11

6. Could a magnet affect solar wind?

   By Daniel M, February 26
   • 6 replies
   • 386 views
   • 
   • Daniel M
   • March 9

7. What are the explanations for greater than C space-time expansion? 1 2

   By wucko, May 9, 2012
   • 43 replies
   • 4694 views
   • 
   • michel123456
   • February 29

8. Cosmology text book

   By Lizwi, February 24
   • 1 reply
   • 178 views
   • 
   • swansont
   • February 24

9. Bootes void

   By Bmpbmp1975, February 17
   • 16 replies
   • 618 views
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   • Strange
   • February 23

10. Tachyons and Superluminal motion:

    By beecee, February 16
    • 11 replies
    • 430 views
    • 
    • Mordred
    • February 19

11. Vacuum decay theory questions

    By Bmpbmp1975, February 18
    • 15 replies
    • 347 views
    • 
    • Phi for All
    • February 18

12. Is the Earth close to the center of the Universe ? 1 2

    By MaximT, January 16
    • 25 replies
    • 14642 views
    • 
    • beecee
    • February 18

13. Apep

    By Bmpbmp1975, February 16
    • 20 replies
    • 520 views
    • 
    • Bmpbmp1975
    • February 16

14. Brown Dwarfs

    By Bmpbmp1975, February 14
    • 10 replies
    • 323 views
    • 
    • Airbrush
    • February 16

15. Star older than universe

    By Bmpbmp1975, February 14
    • 9 replies
    • 404 views
    • 
    • dimreepr
    • February 16

16. Betelguese dimming

    By Bmpbmp1975, February 15
    • 3 replies
    • 230 views
    • 
    • swansont
    • February 16

17. Apep

    By Bmpbmp1975, February 15
    • 1 reply
    • 222 views
    • 
    • swansont
    • February 15

18. Dead galaxy questions 1 2 3 4 7

    By Bmpbmp1975, February 11
    • 156 replies
    • 9112 views
    • 
    • Phi for All
    • February 15

19. The Way to See Behind The Moon

    By Ritzier, February 5
    • 2 replies
    • 301 views
    • 
    • Airbrush
    • February 15

20. Biggest Cannon in the Universe 3c186

    By Airbrush, November 30, 2019
    • 6 replies
    • 638 views
    • 
    • Strange
    • February 11

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

    By cisjd.del, January 31
    • 24 replies
    • 660 views
    • 
    • Markus Hanke
    • February 1

22. Big Bang and Dark Matter - doubts

    By ravell, January 27
    • 1 reply
    • 312 views
    • 
    • swansont
    • January 27

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

    By LaurieAG, January 24
    • 1 reply
    • 162 views
    • 
    • LaurieAG
    • January 24

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

    By Calebeano, January 18
    • 3 replies
    • 275 views
    • 
    • Endy0816
    • January 18

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

    By Angelo, January 10
    • 58 replies
    • 20698 views
    • 
    • MaximT
    • January 16