Astronomy and Cosmology

3685 topics in this forum

1. Cosmological Principle 1 2 3

   By Mordred, May 30, 2015
   • 52 replies
   • 36.1k views
   • 
   • michel123456
   • June 22, 2020

2. Using BOINC / seti@home?

   By Sayonara, August 29, 2010
   • 10 replies
   • 20.5k views
   • 
   • Altruist1
   • March 26, 2016

3. Cosmo Basics

   By Martin, October 19, 2008
   • 13 replies
   • 27.4k views
   • 
   • swansont
   • August 3, 2018

4. Astronomy links 1 2 3 4 5

   By Martin, May 24, 2004
   • 105 replies
   • 103.6k views
   • 
   • swansont
   • June 25, 2021

5. Asteroid defense ideas

   By Airbrush, April 17
   • 8 replies
   • 222 views
   • 
   • Mordred
   • April 19
6. Introduction to the Theory of Unity

   Topic was moved to forum Speculations

7. A Speculative Description of Dark Matter and Dark Energy

   Topic was moved to forum Speculations

8. Monolith asteroids: a Silent Order.

   By GeeKay, April 5
   • 2 replies
   • 162 views
   • 
   • GeeKay
   • April 5

9. Interview invitation for YouTube channel

   By Viktoriia, April 4
   • 1 reply
   • 118 views
   • 
   • swansont
   • April 4
10. RICHARD DAWKINS ❤ CANCEL CULTURE (or not)

    Topic was moved to forum Politics

11. Gravitational effect and pressure of photons in Friedmann equation?

    By icarus2, March 31
    • 12 replies
    • 322 views
    • 
    • Mordred
    • April 2

12. Sunshine on Titan 1 2

    By Gian, March 22
    • 27 replies
    • 760 views
    • 
    • swansont
    • April 14

13. I really need your help with some calculations 1 2

    By tmdarkmatter, March 17
    • 28 replies
    • 631 views
    • 
    • tmdarkmatter
    • March 23

14. Novel Dark Matter & Energy Hypothesis

    By exchemist, March 9
    • 1 reply
    • 168 views
    • 
    • Genady
    • March 9

15. Expansion of space- Split from: Alabama court - "Embryos are people"

    By npts2020, March 1
    • 16 replies
    • 348 views
    • 
    • MigL
    • March 10

16. Could we observe the present ? 1 2

    By Time Traveler, February 1
    • 30 replies
    • 1.4k views
    • 
    • Phi for All
    • February 3

17. Bringing Samples Back From Mars

    By Photon Guy, January 31
    • 5 replies
    • 343 views
    • 
    • Ken Fabian
    • February 5

18. Determining distance (split from Cosmic Megastructure Challenges Theories of the Universe

    By Luc Turpin, January 13
    • 0 replies
    • 205 views
    • 
    • Luc Turpin
    • January 13

19. Space Exploration Within Our Solar System

    By Chris Sawatsky, January 11
    • 2 replies
    • 219 views
    • 
    • Phi for All
    • January 12

20. Lunar lander mission leaking fuel from Vulcan rocket, mission in jeapardy

    By Paulsrocket, January 8
    • 0 replies
    • 124 views
    • 
    • Paulsrocket
    • January 8

21. How is it known that the CMB is everywhere in the Universe when

    By Paulsrocket, January 3
    • 10 replies
    • 574 views
    • 
    • MigL
    • January 4

22. Direction of ionized electric fields in star birth

    By StringJunky, December 17, 2023
    • 0 replies
    • 147 views
    • 
    • StringJunky
    • December 17, 2023

23. Expansion

    By geordief, December 10, 2023
    • 9 replies
    • 412 views
    • 
    • KJW
    • December 11, 2023

24. Hall Thrusters

    By Photon Guy, December 5, 2023
    • 3 replies
    • 318 views
    • 
    • TheVat
    • December 5, 2023

25. How can a big bang expand to an infinite size? 1 2 3 4 5

    By Airbrush, November 25, 2023
    • 116 replies
    • 5.7k views
    • 
    • Markus Hanke
    • January 8