Astronomy and Cosmology

3626 topics in this forum

1. Astronomy links 1 2 3 4 5

   By Martin, May 24, 2004
   • 105 replies
   • 97.9k views
   • 
   • swansont
   • June 25, 2021

2. Cosmological Principle 1 2 3

   By Mordred, May 30, 2015
   • 52 replies
   • 33.5k views
   • 
   • michel123456
   • June 22, 2020

3. Cosmo Basics

   By Martin, October 19, 2008
   • 13 replies
   • 26.6k views
   • 
   • swansont
   • August 3, 2018

4. Using BOINC / seti@home?

   By Sayonara, August 29, 2010
   • 10 replies
   • 19.8k views
   • 
   • Altruist1
   • March 26, 2016

5. Are the stars of the constellation stationary?

   By lightforyoou, Thursday at 02:41 AM
   • 11 replies
   • 170 views
   • 
   • studiot
   • 10 hours ago

6. dark matter question 1 2 3

   By hoola, January 1
   • 70 replies
   • 1k views
   • 
   • Mordred
   • 23 hours ago

7. Are inflation and expansion relativistic theories?

   By geordief, Monday at 10:32 PM
   • 3 replies
   • 72 views
   • 
   • Genady
   • Monday at 11:09 PM

8. The Sunday Promenade on Titan

   By Gian, Monday at 03:09 PM
   • 0 replies
   • 35 views
   • 
   • Gian
   • Monday at 03:09 PM

9. Dark Energy

   By Agent Smith, January 18
   • 17 replies
   • 189 views
   • 
   • Genady
   • Monday at 01:07 PM

10. Can we create Micro Climate Craters on Mars by deflecting Comets? Need Peer Review

    By PhotonBytes, January 7
    • 0 replies
    • 79 views
    • 
    • PhotonBytes
    • January 7

11. Nature loves spirals

    By studiot, January 5
    • 6 replies
    • 119 views
    • 
    • Genady
    • January 6

12. Can life survive in the a galaxy's bulge? Between galaxies?

    By gib65, December 23, 2022
    • 3 replies
    • 228 views
    • 
    • Airbrush
    • January 5

13. What is the depth of the gravitational potential of the universe?

    By Halc, February 27, 2021
    • 9 replies
    • 680 views
    • 
    • Mordred
    • January 4

14. How does the light from distant stars get to our eyes?

    By gib65, December 31, 2022
    • 24 replies
    • 295 views
    • 
    • studiot
    • January 3

15. Why is a fine-tuned universe a problem? 1 2 3 4

    By 34student, February 11, 2022
    • 83 replies
    • 3.7k views
    • 
    • Mordred
    • December 27, 2022

16. Does the expansion of a quantum system of particles cause the creation of new space? 1 2

    By geordief, December 25, 2022
    • 26 replies
    • 273 views
    • 
    • Genady
    • December 26, 2022

17. Was the universe "dark" before the eyesight

    By vitttorrio, December 20, 2022
    • 10 replies
    • 305 views
    • 
    • motalebhossainseo
    • December 25, 2022

18. Musings of a mad scientist (inflation as cosmological constant)

    By Mordred, December 24, 2022
    • 0 replies
    • 152 views
    • 
    • Mordred
    • December 24, 2022

19. Mr

    By Edenjs, December 19, 2022
    • 10 replies
    • 213 views
    • 
    • TheVat
    • December 19, 2022

20. Dark energy with negative and positive kinetic energy and the Big Rip

    By xX_minecraftMLGPRO2019_Xx, December 13, 2022
    • 4 replies
    • 255 views
    • 
    • xX_minecraftMLGPRO2019_Xx
    • December 17, 2022

21. Did the bing bang actually happen? 1 2 3

    By tmdarkmatter, December 16, 2022
    • 50 replies
    • 780 views
    • 
    • Phi for All
    • December 16, 2022

22. Hydrogen thermal equilibrium decoupling

    By Mordred, December 15, 2022
    • 2 replies
    • 159 views
    • 
    • Mordred
    • December 16, 2022

23. Solar fusion, neutrinos and age of solar system

    By Sensei, September 22, 2014
    • 10 replies
    • 2.2k views
    • 
    • Mordred
    • December 16, 2022

24. Revisiting the Kardashev Scale of Civilizations

    By Airbrush, December 11, 2022
    • 0 replies
    • 179 views
    • 
    • Airbrush
    • December 11, 2022

25. Will universe collapse?

    By vitttorrio, December 11, 2022
    • 4 replies
    • 271 views
    • 
    • Genady
    • December 11, 2022