Astronomy and Cosmology

3693 topics in this forum

1. Life Near a Red Dwarf Star

   By Airbrush, March 31, 2021
   • 11 replies
   • 1.8k views
   • 
   • Airbrush
   • April 13, 2021

2. Researchers confirm accuracy of cosmological data analysis technique:

   By beecee, March 19, 2021
   • 0 replies
   • 660 views
   • 
   • beecee
   • March 19, 2021

3. Does the expansion of space mean anything for the movement of matter in space?

   By Alex Mercer, March 18, 2021
   • 18 replies
   • 1.6k views
   • 
   • Prof Reza Sanaye
   • March 19, 2021

4. The expanding universe

   By geordief, March 18, 2021
   • 6 replies
   • 971 views
   • 
   • MigL
   • March 19, 2021

5. Recommend a textbook

   By Toby Jug, March 2, 2021
   • 5 replies
   • 892 views
   • 
   • Toby Jug
   • March 2, 2021

6. Curiosity/Perseverance landing scale comparison contradiction.

   By AlexandrKushnirtshuk, March 2, 2021
   • 6 replies
   • 934 views
   • 
   • swansont
   • March 2, 2021

7. Lighting questions on the Perseverance landing video. 1 2

   By AlexandrKushnirtshuk, February 25, 2021
   • 41 replies
   • 4.1k views
   • 
   • Phi for All
   • February 27, 2021

8. Dark Matter collapsing to Super Massive Black Holes:

   By beecee, February 24, 2021
   • 0 replies
   • 555 views
   • 
   • beecee
   • February 24, 2021

9. Vacuum pressure of space

   By JustinW, January 11, 2012
   • 16 replies
   • 5.6k views
   • 
   • MigL
   • February 22, 2021

10. Why is there something rather than nothing? 1 2 3

    By Vexen, March 16, 2019
    • 50 replies
    • 8.1k views
    • 
    • MigL
    • February 20, 2021

11. MOND (split from New Study Claims Dark Matter Doesn’t Exist)

    By martillo, February 19, 2021
    • 3 replies
    • 586 views
    • 
    • Markus Hanke
    • February 20, 2021

12. Universe expanding...

    By Externet, February 17, 2021
    • 12 replies
    • 1.5k views
    • 
    • zapatos
    • February 18, 2021

13. Eternal universe (split from Universe expanding...)

    By Airbrush, February 17, 2021
    • 5 replies
    • 828 views
    • 
    • swansont
    • February 17, 2021

14. Matter travelling faster than speed of light

    By Ayden, February 7, 2021
    • 11 replies
    • 1.4k views
    • 
    • Ayden
    • February 11, 2021

15. Missing mass (split from Dark Matter)

    By SergUpstart, February 7, 2021
    • 2 replies
    • 632 views
    • 
    • beecee
    • February 7, 2021

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

    By wucko, May 9, 2012
    • 47 replies
    • 8k views
    • 
    • Markus Hanke
    • February 6, 2021

17. Why Gravity Exist??

    By Harshit Mishra, February 1, 2021
    • 3 replies
    • 825 views
    • 
    • Phi for All
    • February 1, 2021

18. The affect of space weather

    By bear33, January 19, 2021
    • 7 replies
    • 1k views
    • 
    • cannongray
    • January 27, 2021

19. Our perspective of the Sun

    By Adamchiv, January 25, 2021
    • 24 replies
    • 2k views
    • 
    • iNow
    • January 26, 2021

20. Another Dumb t=0 Question

    By sethoflagos, January 24, 2021
    • 7 replies
    • 899 views
    • 
    • Markus Hanke
    • January 26, 2021

21. The Fermi Paradox:

    By beecee, January 24, 2021
    • 1 reply
    • 822 views
    • 
    • mathematic
    • January 24, 2021

22. Lost Space

    By sethoflagos, January 24, 2021
    • 2 replies
    • 862 views
    • 
    • sethoflagos
    • January 24, 2021

23. Spacecraft that can be used for microgravity experiments

    By bear33, January 20, 2021
    • 0 replies
    • 706 views
    • 
    • bear33
    • January 20, 2021

24. An infinite and eternal universe 1 2

    By ProximaCentauri, April 6, 2020
    • 35 replies
    • 68.1k views
    • 
    • beecee
    • January 19, 2021

25. Researchers find Mars has a Chandler wobble

    By beecee, January 11, 2021
    • 0 replies
    • 604 views
    • 
    • beecee
    • January 11, 2021