Astronomy and Cosmology

3686 topics in this forum

1. Hulse/Taylor Binary Pulsar System and Gravitational Radiation:

   By beecee, October 8, 2017
   • 4 replies
   • 737 views
   • 
   • beecee
   • October 9, 2017

2. building big radio dishes, e.g. China's 500m FAST?

   By Widdekind, December 28, 2011
   • 0 replies
   • 736 views
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   • Widdekind
   • December 28, 2011

3. Is resurfacing on Europa a consequence of tidal heating?

   By vertigonight, March 18, 2005
   • 0 replies
   • 735 views
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   • vertigonight
   • March 18, 2005

4. Alternative to dark matter (not MOND)

   By Jacques, May 24, 2007
   • 1 reply
   • 735 views
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   • timo
   • May 25, 2007

5. Total Solar Eclipse Shanghai 2009

   By jerrywickey, March 17, 2008
   • 0 replies
   • 735 views
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   • jerrywickey
   • March 17, 2008

6. Further Validity for the Big Bang?

   By beecee, October 5, 2018
   • 0 replies
   • 735 views
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   • beecee
   • October 5, 2018

7. Is Destiny’s ‘syzygy’-‘god wave’ concept scientifically plausible?

   By Fanghur, April 17, 2022
   • 1 reply
   • 735 views
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   • exchemist
   • April 17, 2022

8. Hubble space telescope

   By Pradeepkumar, September 2, 2008
   • 1 reply
   • 734 views
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   • insane_alien
   • September 2, 2008

9. Stars' wind-blown-bubbles expand with time ?

   By Widdekind, September 22, 2011
   • 2 replies
   • 734 views
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   • Widdekind
   • September 23, 2011

10. Comet viewing

    By xtheunknown0, June 16, 2012
    • 1 reply
    • 734 views
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    • Ophiolite
    • June 16, 2012

11. How realistically can we describe the early history of our universe?

    By petrushka.googol, January 23, 2014
    • 1 reply
    • 734 views
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    • Strange
    • January 23, 2014

12. How can the Universe not be infinite in size?

    By Selectrick, January 4, 2013
    • 2 replies
    • 733 views
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    • imatfaal
    • January 7, 2013

13. How can you measure distances across space?

    By ManifestDragon, February 26, 2018
    • 2 replies
    • 733 views
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    • Janus
    • February 26, 2018

14. Mini Tremors detected on Mars for first time:

    By beecee, March 19, 2019
    • 3 replies
    • 733 views
    • 
    • beecee
    • March 21, 2019

15. Largest yet Binary BH Collision Discovered:

    By beecee, December 3, 2018
    • 2 replies
    • 732 views
    • 
    • Strange
    • December 8, 2018

16. Star exploded, survived, and exploded again

    By beecee, November 9, 2017
    • 1 reply
    • 731 views
    • 
    • T. McGrath
    • November 10, 2017

17. Big bang and bubbles: some philosophy

    By Guest, January 1, 1970
    • 0 replies
    • 730 views
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    • Guest
    • January 1, 1970

18. Apep

    By Bmpbmp1975, February 15, 2020
    • 1 reply
    • 730 views
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    • swansont
    • February 15, 2020

19. Dark Matter initial fluctuations (?)

    By Widdekind, December 15, 2009
    • 0 replies
    • 729 views
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    • Widdekind
    • December 15, 2009

20. What do you think of this possible explanation of the red staining seen on Europa and a possible test for life on Europa?

    By gedsaz, September 12, 2017
    • 1 reply
    • 729 views
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    • beecee
    • September 13, 2017

21. More accurate distance mez for cosmology (SciAm item)

    By Martin, May 23, 2009
    • 0 replies
    • 728 views
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    • Martin
    • May 23, 2009

22. Force vectors at event horizon

    By petrushka.googol, May 6, 2015
    • 1 reply
    • 728 views
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    • ajb
    • May 6, 2015

23. Does it take an infinite time to reach the center of a black hole?

    By Vexen, March 4, 2019
    • 6 replies
    • 728 views
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    • beecee
    • March 5, 2019

24. Gamma-Ray Large Area Space Telescope Webcast

    By kscvideos, June 14, 2008
    • 0 replies
    • 727 views
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    • kscvideos
    • June 14, 2008

25. Understanding Cosmology... According to Radio Lab

    By Chromed1, January 6, 2010
    • 1 reply
    • 727 views
    • 
    • liarliarpof
    • January 7, 2010