Astronomy and Cosmology

3708 topics in this forum

1. Gas Clouds: Why?

   By STING, July 9, 2004
   • 5 replies
   • 2k views
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   • Tesseract
   • July 9, 2004

2. a space station

   By Mr. physics, July 18, 2010
   • 13 replies
   • 2k views
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   • New Zealand
   • July 22, 2010

3. Water & Hydroxide Masers

   By Ant Sinclair, August 20, 2015
   • 19 replies
   • 2k views
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   • Ant Sinclair
   • August 21, 2015

4. Why is the day sky blue?

   By dstebbins, December 21, 2014
   • 8 replies
   • 2k views
   • 
   • Eise
   • December 23, 2014

5. Blackholes and mass reduction

   By paulsutton, August 18, 2020
   • 12 replies
   • 2k views
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   • paulsutton
   • August 21, 2020

6. The XENON Dark Matter Project

   By dapifo, July 27, 2012
   • 9 replies
   • 2k views
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   • Severian
   • July 30, 2012

7. FRW Metric

   By Widdekind, August 24, 2011
   • 4 replies
   • 2k views
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   • Widdekind
   • September 25, 2011

8. Who the heck is Pascual Jordan?

   By Aristarchus in Exile, October 21, 2011
   • 3 replies
   • 2k views
   • 
   • DrRocket
   • October 24, 2011

9. Properties of Expansion

   By TakenItSeriously, February 18, 2016
   • 13 replies
   • 2k views
   • 
   • TakenItSeriously
   • February 23, 2016

10. Hypervelocity Black Holes?

    By Airbrush, March 6, 2013
    • 2 replies
    • 2k views
    • 
    • 36grit
    • March 8, 2013

11. Higgs field and black matter

    By Edgard Neuman, February 12, 2015
    • 17 replies
    • 2k views
    • 
    • Edgard Neuman
    • February 23, 2015

12. Alright who stole the stars

    By Bmpbmp1975, April 12, 2020
    • 21 replies
    • 2k views
    • 
    • taeto
    • April 16, 2020

13. Black holes gaining mass

    By Endercreeper01, January 4, 2014
    • 8 replies
    • 2k views
    • 
    • Strange
    • January 24, 2014

14. Speed Of Time On Mars Relative To That On Earth

    By grandlear, January 13, 2013
    • 2 replies
    • 2k views
    • 
    • swansont
    • January 14, 2013

15. Hubble is going down

    By Skye, January 17, 2004
    • 9 replies
    • 2k views
    • 
    • Cap'n Refsmmat
    • January 18, 2004

16. Space sugar...how can they even see it?

    By Baby Astronaut, November 29, 2008
    • 15 replies
    • 2k views
    • 
    • Martin
    • December 3, 2008

17. New Observations on Dark Energy

    By Darkpassenger, December 22, 2008
    • 9 replies
    • 2k views
    • 
    • Royston
    • January 7, 2009

18. The timeslice model survey

    By gillian andrews, June 13, 2011
    • 5 replies
    • 2k views
    • 
    • pantheory
    • June 25, 2011

19. Exoplanets (split from Science videos)

    By Airbrush, June 16, 2019
    • 18 replies
    • 2k views
    • 
    • swansont
    • July 1, 2019

20. N Dimensions

    By Ashish, February 14, 2010
    • 9 replies
    • 2k views
    • 
    • Sagar Gorijala
    • November 14, 2011

21. Cosmic Microwave Background and Black Holes

    By mathematic, June 21, 2015
    • 6 replies
    • 2k views
    • 
    • MigL
    • June 29, 2015

22. Lambda-CDM (supposition vs. evidence)

    By shmengie, March 26, 2016
    • 14 replies
    • 2k views
    • 
    • Klaynos
    • March 27, 2016

23. Europe begins building Mars lander

    By deep, August 9, 2002
    • 6 replies
    • 2k views
    • 
    • aman
    • August 16, 2002

24. Twin planets

    By Moontanman, January 25, 2012
    • 5 replies
    • 2k views
    • 
    • emilievak
    • April 8, 2012

25. Communications via the Moon

    By scicop, August 12, 2006
    • 15 replies
    • 2k views
    • 
    • [Tycho?]
    • August 13, 2006