Astronomy and Cosmology

3449 topics in this forum

1. Astronomy links 1 2 3 4 5

   By Martin, May 24, 2004
   • 103 replies
   • 88794 views
   • 
   • paulsutton
   • August 3

2. Cosmological Principle 1 2 3

   By Mordred, May 30, 2015
   • 52 replies
   • 27696 views
   • 
   • michel123456
   • June 22

3. Cosmo Basics

   By Martin, October 19, 2008
   • 13 replies
   • 23767 views
   • 
   • swansont
   • August 3, 2018

4. Using BOINC / seti@home?

   By Sayonara, August 29, 2010
   • 10 replies
   • 17331 views
   • 
   • Altruist1
   • March 26, 2016

5. Some exomoons could be habitable for humans

   By alfa015, June 20
   • 22 replies
   • 554 views
   • 
   • Endy0816
   • Wednesday at 05:11 AM

6. Was Mars an ice world?

   By Moontanman, September 13, 2019
   • 23 replies
   • 841 views
   • 
   • Moontanman
   • August 6

7. Lightspeed Barrier And Black Holes

   By Photon Guy, July 9
   • 7 replies
   • 286 views
   • 
   • Markus Hanke
   • August 6

8. Nuclear Star Trek

   By Gian, June 29
   • 14 replies
   • 365 views
   • 
   • swansont
   • August 1

9. pinhole solar viewer

   By paulsutton, July 30
   • 4 replies
   • 132 views
   • 
   • swansont
   • July 31

10. Article : Did a supernova trigger the late Devonian extinction?

    By paulsutton, July 31
    • 0 replies
    • 109 views
    • 
    • paulsutton
    • July 31

11. Astrophysicists unveil biggest-ever 3D map of Universe...

    By Orion1, July 20
    • 4 replies
    • 298 views
    • 
    • MigL
    • July 23

12. Has anyone

    By Paul Singh Jr, July 13
    • 20 replies
    • 532 views
    • 
    • Mordred
    • July 21

13. Re-collapsing matter and isotopic ratios

    By joigus, July 15
    • 4 replies
    • 220 views
    • 
    • Mordred
    • July 17

14. New cosmocalculator

    By Mordred, July 11
    • 1 reply
    • 211 views
    • 
    • joigus
    • July 15

15. Mini Nuclear Pulse Probes

    By Airbrush, July 5
    • 19 replies
    • 429 views
    • 
    • Airbrush
    • July 15

16. What is this "fundamental pure number" please ?

    By stephaneww, June 27
    • 3 replies
    • 223 views
    • 
    • stephaneww
    • June 29

17. Universe has no end because

    By Daystar1, June 26
    • 2 replies
    • 278 views
    • 
    • MigL
    • June 26

18. Newtonian Gravitation Simulation Help!

    By The victorious truther, June 24
    • 0 replies
    • 188 views
    • 
    • The victorious truther
    • June 24

19. Drake Equation

    By paulsutton, June 18
    • 3 replies
    • 247 views
    • 
    • Mordred
    • June 19

20. Physicists Announce Potential Dark Matter Breakthrough

    By paulsutton, June 17
    • 5 replies
    • 317 views
    • 
    • paulsutton
    • June 18

21. How can the initial universe (extremely dense) be hot when density and temperature are inversely proportional?

    By mo.sabith, June 13
    • 22 replies
    • 466 views
    • 
    • Mordred
    • June 17

22. Does outer space have drag?

    By visinedrops, June 15
    • 18 replies
    • 414 views
    • 
    • J.C.MacSwell
    • June 17

23. Fermi paradox solutions

    By compute, June 8
    • 8 replies
    • 418 views
    • 
    • joigus
    • June 11

24. Inconsistencies between recession speeds and distance to far objects

    By Halc, June 7
    • 9 replies
    • 362 views
    • 
    • Mordred
    • June 11

25. What is dark matter?

    By KANDEL, December 26, 2019
    • 4 replies
    • 630 views
    • 
    • qidran
    • June 4