Astronomy and Cosmology

3708 topics in this forum

1. Intermittent Matter

   By aman, April 2, 2004
   • 0 replies
   • 972 views
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   • aman
   • April 2, 2004

2. Popular lecture about universe (Sean Carroll)

   By Martin, February 22, 2005
   • 0 replies
   • 972 views
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   • Martin
   • February 22, 2005

3. Venus...

   By Externet, February 20, 2009
   • 3 replies
   • 972 views
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   • Sisyphus
   • February 20, 2009

4. cosmic rays and the earths magnetosphere

   By petrushka.googol, November 2, 2013
   • 2 replies
   • 971 views
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   • Enthalpy
   • November 2, 2013

5. The Unique Universe

   By Martin, June 2, 2009
   • 2 replies
   • 970 views
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   • Martin
   • June 3, 2009

6. Spikes on Mars

   By mistermack, July 25, 2023
   • 11 replies
   • 970 views
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   • Boltzmannbrain
   • August 24, 2023

7. What would SETI pick up from Earth's signals?

   By CaptainPanic, April 22, 2009
   • 2 replies
   • 969 views
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   • Megabrain
   • April 22, 2009

8. Parallel Lines #2

   By rigney, June 3, 2010
   • 4 replies
   • 969 views
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   • rigney
   • June 5, 2010

9. Universal expansion, coordinate systems, time and the block universe

   By studiot, January 12, 2017
   • 3 replies
   • 969 views
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   • Mordred
   • January 12, 2017

10. Solution of several astronomical riddles

    By Ivan Gorelik, October 19, 2009
    • 0 replies
    • 968 views
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    • Ivan Gorelik
    • October 19, 2009

11. My photos of the lunar eclipse

    By blike, October 28, 2004
    • 3 replies
    • 967 views
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    • ed84c
    • October 28, 2004

12. Does Mercury rotate 88 times per Orbit?

    By vertigonight, April 1, 2005
    • 3 replies
    • 967 views
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    • Ophiolite
    • April 1, 2005

13. The beginning of physical objects

    By John Jones, October 23, 2010
    • 2 replies
    • 967 views
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    • DanielC
    • October 23, 2010

14. The Universe was always the same size?

    By Banshii, April 5, 2013
    • 1 reply
    • 967 views
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    • Iggy
    • April 7, 2013

15. Fatter Than Air

    By fatter.than.air, June 3, 2008
    • 2 replies
    • 966 views
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    • YT2095
    • June 3, 2008

16. Time viewed from the singularity?

    By caharris, June 26, 2010
    • 2 replies
    • 966 views
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    • caharris
    • June 26, 2010

17. What planet is this?

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

18. Can one poke a really stiff stick at greater than light speed?

    By Alan McDougall, July 9, 2012
    • 2 replies
    • 965 views
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    • Cap'n Refsmmat
    • July 9, 2012

19. Are the stars of the constellation stationary?

    By lightforyoou, January 26, 2023
    • 11 replies
    • 965 views
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    • studiot
    • January 27, 2023

20. Please help me....

    By Rajdilawar S, October 5, 2006
    • 1 reply
    • 964 views
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    • Martin
    • October 5, 2006

21. Dark energy as vacuum fluctuations of photons?

    By IM Egdall, September 27, 2012
    • 0 replies
    • 964 views
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    • IM Egdall
    • September 27, 2012

22. Effects of Rotation Around the Axis

    By Weitter Duckss, July 16, 2019
    • 8 replies
    • 964 views
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    • swansont
    • July 16, 2019

23. Collapsing Universe?

    By aguy2, March 6, 2006
    • 2 replies
    • 963 views
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    • aguy2
    • March 7, 2006

24. Life cycle remain

    By DMD_Gannon, March 10, 2009
    • 3 replies
    • 963 views
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    • GDG
    • March 30, 2009

25. Light 360?

    By Endy0816, January 14, 2015
    • 2 replies
    • 963 views
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    • Endy0816
    • January 14, 2015