Astronomy and Cosmology

3709 topics in this forum

1. Saturn's Formation and Early Evolution at the Origin of Jupiter's Massive Moons

   By T. McGrath, June 12, 2018
   • 4 replies
   • 1.2k views
   • 
   • beecee
   • June 13, 2018

2. Would this be the final confirmation re the Big Bang?

   By beecee, June 8, 2018
   • 5 replies
   • 1.1k views
   • 
   • beecee
   • June 9, 2018

3. Does the Oort Cloud protect us?

   By Hypercube, June 16, 2012
   • 24 replies
   • 6.8k views
   • 
   • MarkE
   • June 8, 2018

4. When did humans realize that there are another galaxies?

   By hamburger228, May 25, 2018
   • 5 replies
   • 847 views
   • 
   • Mordred
   • May 26, 2018

5. Surviving in a Black Hole

   By GlueOn, May 15, 2018
   • 11 replies
   • 1.8k views
   • 
   • icarus2
   • May 17, 2018

6. What planet is this?

   By mistykasumi, May 12, 2018
   • 8 replies
   • 968 views
   • 
   • Eise
   • May 13, 2018

7. Black Hole Binary Pairs:

   By beecee, May 12, 2018
   • 0 replies
   • 655 views
   • 
   • beecee
   • May 12, 2018

8. swimming on Titan

   By Gian, May 3, 2018
   • 10 replies
   • 1.6k views
   • 
   • Gian
   • May 10, 2018

9. Field Question 1 2 3 4 7

   By MikeAL, May 4, 2018
   • 151 replies
   • 14.1k views
   • 
   • MikeAL
   • May 9, 2018

10. Consciousness as a universal framework

    By Shane Bellone, May 9, 2018
    • 0 replies
    • 584 views
    • 
    • Shane Bellone
    • May 9, 2018

11. explanation of mechanism of moon capturing 1 2

    By Jon Steensen, May 4, 2018
    • 26 replies
    • 2.7k views
    • 
    • Airbrush
    • May 7, 2018

12. A question about Hubble's Law

    By Maartenn100, May 2, 2018
    • 7 replies
    • 1.7k views
    • 
    • Maartenn100
    • May 6, 2018

13. When we see the past through the telescope, why can we see whole galaxies moving away from us as one whole galaxy, while the stars in the front are younger then the stars we see in the back?

    By Maartenn100, May 2, 2018
    • 9 replies
    • 1.4k views
    • 
    • Maartenn100
    • May 2, 2018

14. I Took A Weird Photo during a Solar Eclipse last year

    By Aleman569, April 29, 2018
    • 2 replies
    • 867 views
    • 
    • Eise
    • May 1, 2018

15. Dark matter dark energy conundrum

    By wallflash, April 10, 2017
    • 20 replies
    • 3k views
    • 
    • beecee
    • May 1, 2018

16. Stuff in Space

    By Strange, April 10, 2018
    • 9 replies
    • 1.9k views
    • 
    • Strange
    • April 27, 2018

17. Radius of curvature of Spacetime

    By studiot, April 7, 2018
    • 16 replies
    • 2k views
    • 
    • studiot
    • April 26, 2018

18. Witnessing a Galactic Pileup:

    By beecee, April 25, 2018
    • 3 replies
    • 1.6k views
    • 
    • beecee
    • April 26, 2018

19. Is There an Eternity?

    By General_Bloodgeon, April 23, 2018
    • 11 replies
    • 1.6k views
    • 
    • General_Bloodgeon
    • April 25, 2018

20. Black holes and dark matter linked?

    By SimpleRick, April 18, 2018
    • 19 replies
    • 2.3k views
    • 
    • MigL
    • April 20, 2018

21. Parallax of the stars

    By sunshinesunshine, April 18, 2018
    • 10 replies
    • 1.1k views
    • 
    • Strange
    • April 18, 2018

22. Lost Planet:

    By beecee, April 17, 2018
    • 2 replies
    • 886 views
    • 
    • Airbrush
    • April 18, 2018

23. Testing General Relativity and Gravity:

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

24. Artificial Gravity on the ISS 1 2

    By Airbrush, April 7, 2018
    • 29 replies
    • 2.8k views
    • 
    • Airbrush
    • April 16, 2018

25. Space is the ultimate antecedent 1 2

    By gwb, March 26, 2018
    • 32 replies
    • 3.8k views
    • 
    • Mordred
    • April 13, 2018