Astronomy and Cosmology

3708 topics in this forum

1. computer model of the solar system

   By rufus, July 29, 2008
   • 5 replies
   • 1k views
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   • rufus
   • July 29, 2008

2. Is universe expanding?

   By Dark_anzel, January 15, 2009
   • 3 replies
   • 1k views
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   • Klaynos
   • January 15, 2009

3. Universe from nothing vs Mirror Universe

   By Sorcerer, October 18, 2015
   • 2 replies
   • 1k views
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   • Sorcerer
   • October 18, 2015

4. What are the stages of life of a star of spectral class O?

   By PhantomAvocado, June 22, 2014
   • 2 replies
   • 1k views
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   • Mordred
   • June 22, 2014

5. Asteroid

   By Leewright10, July 24, 2019
   • 4 replies
   • 1k views
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   • Mordred
   • July 25, 2019

6. Nasa looking to pull the plug on unmanned missions.

   By mmalluck, March 10, 2005
   • 3 replies
   • 1k views
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   • us.2u
   • March 11, 2005

7. Questions on zero-point energy

   By Simpleton, May 2, 2009
   • 4 replies
   • 1k views
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   • Simpleton
   • May 3, 2009

8. Can life survive in the a galaxy's bulge? Between galaxies?

   By gib65, December 23, 2022
   • 6 replies
   • 1k views
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   • mistermack
   • July 19, 2023

9. Sightings and Observation Database?

   By mooeypoo, June 6, 2009
   • 6 replies
   • 1k views
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   • mooeypoo
   • June 8, 2009

10. Space Expansion, wavelength and energy density

    By AbstractDreamer, August 28, 2023
    • 7 replies
    • 1k views
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    • AbstractDreamer
    • April 26

11. Swarzschild radius for universe

    By elligatr, September 24, 2009
    • 2 replies
    • 1k views
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    • ajb
    • September 25, 2009

12. A New Cosmological Redshift

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

13. Hot Jupiters have mis-aligned orbits ?

    By Widdekind, October 1, 2012
    • 0 replies
    • 1k views
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    • Widdekind
    • October 1, 2012

14. WMAP polarization data vs. Quasar spectra?

    By Widdekind, December 1, 2012
    • 0 replies
    • 1k views
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    • Widdekind
    • December 1, 2012

15. Multiverses, wow that's big!

    By mpmcd101, November 30, 2014
    • 1 reply
    • 1k views
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    • hypervalent_iodine
    • November 30, 2014

16. Object identification

    By purintjp, September 20, 2009
    • 4 replies
    • 1k views
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    • DrP
    • September 21, 2009

17. Universes Density

    By ShaneJ, June 5, 2013
    • 1 reply
    • 1k views
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    • Royston
    • June 6, 2013

18. Need help in putting words to formulas

    By anti10188, October 4, 2018
    • 8 replies
    • 1k views
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    • anti10188
    • October 4, 2018

19. Gas Giants

    By rocketman421, July 21, 2009
    • 3 replies
    • 1k views
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    • rocketman421
    • July 21, 2009

20. Does accumulation of gravitational radiation increase quantity of meters in space?

    By DimaMazin, October 11, 2018
    • 10 replies
    • 1k views
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    • DimaMazin
    • October 13, 2018

21. Do we need to go light speed

    By Curious layman, June 15, 2019
    • 4 replies
    • 1k views
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    • Ghideon
    • June 15, 2019

22. observation & intuition VS science

    By jimmyjammy, June 16, 2013
    • 2 replies
    • 1k views
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    • Airbrush
    • June 18, 2013

23. Google Science Project 2015

    By metehanemlk, May 27, 2015
    • 2 replies
    • 1k views
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    • pavelcherepan
    • May 28, 2015

24. Random Astronomy question

    By Johnny5, April 23, 2005
    • 3 replies
    • 1k views
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    • swansont
    • April 24, 2005

25. Moon Colonization

    By Everlasting, April 5, 2007
    • 2 replies
    • 1k views
    • 
    • foodchain
    • April 6, 2007