Astronomy and Cosmology

3708 topics in this forum

1. dark energy (not so) obviously

   By alexro, February 18, 2013
   • 16 replies
   • 1.9k views
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   • ACG52
   • February 23, 2013

2. Black Holes

   By predator250, May 27, 2016
   • 17 replies
   • 1.9k views
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   • Strange
   • May 29, 2016

3. Earth-Moon Barycenter

   By J'Dona, June 30, 2004
   • 3 replies
   • 1.9k views
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   • J'Dona
   • June 30, 2004

4. Meteorite?

   By Twizeguy, June 3, 2011
   • 4 replies
   • 1.9k views
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   • Airbrush
   • June 3, 2011

5. Does Dark Matter imply Dark Gravity?

   By mothythewso, January 12, 2015
   • 14 replies
   • 1.9k views
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   • Strange
   • February 24, 2015

6. Are we ready for Astronomical Terrorism?

   By kenel, July 12, 2002
   • 3 replies
   • 1.9k views
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   • fafalone
   • July 13, 2002

7. doppler red shift

   By spunnery, March 26, 2007
   • 7 replies
   • 1.9k views
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   • grifter
   • April 25, 2007

8. Expanding universe versus galactic collision

   By buzzinfinity, July 9, 2009
   • 13 replies
   • 1.9k views
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   • Royston
   • July 12, 2009

9. Universe expansion velocity question?

   By porsche11, July 7, 2013
   • 11 replies
   • 1.9k views
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   • Iggy
   • August 2, 2013

10. Stuff in Space

    By Strange, April 10, 2018
    • 9 replies
    • 1.9k views
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    • Strange
    • April 27, 2018

11. Visible Galaxies

    By alt_f13, February 18, 2004
    • 9 replies
    • 1.9k views
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    • JaKiri
    • March 2, 2004

12. Mini Nuclear Pulse Probes

    By Airbrush, July 5, 2020
    • 19 replies
    • 1.9k views
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    • Airbrush
    • July 15, 2020

13. Is it all true

    By jakelee27, May 27, 2009
    • 12 replies
    • 1.9k views
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    • Sisyphus
    • May 30, 2009

14. Mercury....

    By aommaster, April 8, 2004
    • 14 replies
    • 1.9k views
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    • aommaster
    • April 10, 2004

15. What is the rate at which a black hole's gravity weakens as one gets further away?

    By arknd, January 29, 2013
    • 7 replies
    • 1.9k views
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    • Airbrush
    • February 4, 2013

16. Big Bang

    By Realitycheck, September 3, 2011
    • 6 replies
    • 1.9k views
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    • csmyth3025
    • September 4, 2011

17. Now

    By Mart, September 16, 2005
    • 13 replies
    • 1.9k views
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    • starbug1
    • September 17, 2005

18. 2 Universe interaction

    By Proton Head, November 18, 2004
    • 10 replies
    • 1.9k views
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    • Ophiolite
    • March 25, 2005

19. Conditions on Titan

    By Martin, January 21, 2005
    • 14 replies
    • 1.8k views
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    • TimeTraveler
    • January 22, 2005

20. Message to the Overlords (Not even wrong)

    By Martin, August 19, 2007
    • 13 replies
    • 1.8k views
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    • John Cuthber
    • August 20, 2007

21. "Prompt" vs "Delayed" SNIa from WD age, Temp. ?

    By Widdekind, June 20, 2011
    • 3 replies
    • 1.8k views
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    • pantheory
    • June 25, 2011

22. Iron spells the end of a star, I think not...

    By shmengie, April 18, 2015
    • 12 replies
    • 1.8k views
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    • swansont
    • April 21, 2015

23. Black Holes Evaporating

    By ed84c, February 11, 2004
    • 10 replies
    • 1.8k views
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    • JaKiri
    • February 16, 2004

24. Gravitational Interferometer and Kalman

    By Enthalpy, July 19, 2014
    • 10 replies
    • 1.8k views
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    • Enthalpy
    • May 19, 2019

25. Dark Energy/Matter

    By BenSon, March 15, 2005
    • 11 replies
    • 1.8k views
    • 
    • Guest
    • March 22, 2005