Astronomy and Cosmology

3689 topics in this forum

1. Key to the space exploration?

   By Jibbek, February 12, 2019
   • 2 replies
   • 611 views
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   • beecee
   • February 12, 2019

2. Travelling faster than light

   By FindingMeaning, October 29, 2021
   • 1 reply
   • 611 views
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   • swansont
   • October 29, 2021

3. Appropriate Signal to Noise Ratio for CMB Measurements? (Wmap, Cobe, Planck)

   By The victorious truther, June 19, 2021
   • 0 replies
   • 610 views
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   • The victorious truther
   • June 19, 2021

4. Lagrangian Points

   By JamesBrown, March 27, 2010
   • 1 reply
   • 609 views
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   • Cap'n Refsmmat
   • March 27, 2010

5. Missing mass (split from Dark Matter)

   By SergUpstart, February 7, 2021
   • 2 replies
   • 609 views
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   • beecee
   • February 7, 2021

6. Calculating age of the universe using redshift?

   By zeion, March 16, 2010
   • 0 replies
   • 606 views
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   • zeion
   • March 16, 2010

7. heat transfer in stars

   By Lizzzza, July 14, 2019
   • 0 replies
   • 606 views
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   • Lizzzza
   • July 14, 2019

8. The wmap image, how can it be accurate?

   By epsilonbeta, April 17, 2010
   • 0 replies
   • 605 views
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   • epsilonbeta
   • April 17, 2010

9. FYI: World Space Week

   By Arch2008, October 4, 2010
   • 0 replies
   • 605 views
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   • Arch2008
   • October 4, 2010

10. bound un-bound gas clouds ??

    By Widdekind, October 12, 2012
    • 0 replies
    • 604 views
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    • Widdekind
    • October 12, 2012

11. Action Dynamics of the Local Supercluster

    By T. McGrath, December 9, 2017
    • 0 replies
    • 604 views
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    • T. McGrath
    • December 9, 2017

12. Rocket propulsion and economics (split from Solve the climate crisis: A thought experiment)

    By LaurieAG, January 24, 2020
    • 1 reply
    • 604 views
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    • LaurieAG
    • January 24, 2020

13. Black Hole Binary Pairs:

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

14. Water, water, everywhere!!

    By beecee, March 1, 2018
    • 0 replies
    • 601 views
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    • beecee
    • March 1, 2018

15. Space Expansion, wavelength and energy density

    By AbstractDreamer, August 28, 2023
    • 7 replies
    • 598 views
    • 
    • AbstractDreamer
    • April 26

16. Fast recalculation of gravity equipotential lines after Planet explosion

    By webaba, June 23, 2013
    • 0 replies
    • 596 views
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    • webaba
    • June 23, 2013

17. geology of Mars' Gale Crater and Mount Sharp

    By David Palmer, August 17, 2014
    • 0 replies
    • 596 views
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    • David Palmer
    • August 17, 2014

18. Does inflationary theory disprove the big bang theory?

    By Vexen, March 1, 2019
    • 2 replies
    • 596 views
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    • Airbrush
    • March 2, 2019

19. Universal expansion and Black Hole Growth:

    By beecee, November 3, 2021
    • 1 reply
    • 593 views
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    • beecee
    • November 4, 2021

20. Particle horizon in Lemaître model

    By EhsanZ, December 18, 2011
    • 0 replies
    • 590 views
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    • EhsanZ
    • December 18, 2011

21. Communication with other life forms.

    By Kemsley29, January 2, 2021
    • 0 replies
    • 590 views
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    • Kemsley29
    • January 2, 2021

22. Please, tell what objects

    By RomanRodinskiy, November 26, 2022
    • 2 replies
    • 589 views
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    • joigus
    • November 26, 2022

23. Another test for Einstein:

    By beecee, February 22, 2018
    • 0 replies
    • 588 views
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    • beecee
    • February 22, 2018

24. Will the universe reatart itself?

    By Vexen, March 2, 2019
    • 2 replies
    • 588 views
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    • Sensei
    • March 2, 2019

25. help needed on adding additional objects to FITS images...

    By cosmosbird888, December 9, 2008
    • 0 replies
    • 586 views
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    • cosmosbird888
    • December 9, 2008