Astronomy and Cosmology

3708 topics in this forum

1. Light sails

   By Horza2002, January 21, 2010
   • 8 replies
   • 1.4k views
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   • Mr Skeptic
   • January 22, 2010

2. Particles accelerators and cosmology

   By pioneer, April 26, 2010
   • 5 replies
   • 1.4k views
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   • pioneer
   • April 26, 2010

3. Missing Matter Found:

   By beecee, October 10, 2017
   • 9 replies
   • 1.4k views
   • 
   • koti
   • October 12, 2017

4. If you could tour the galaxy what spectacles would you go to see?

   By boo, August 29, 2019
   • 9 replies
   • 1.4k views
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   • swansont
   • August 29, 2019

5. Gammaray Bursts (all you ever wanted to know)

   By Martin, June 1, 2006
   • 6 replies
   • 1.4k views
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   • macrocosmos
   • June 5, 2006

6. Maximum size of solar system

   By petrushka.googol, October 11, 2013
   • 5 replies
   • 1.4k views
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   • Archimedes
   • October 13, 2013

7. 40TH Anniversary: NASAs Longest and Farthest.

   By beecee, August 4, 2017
   • 10 replies
   • 1.4k views
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   • beecee
   • August 11, 2017

8. neutron star

   By stevebtaylor, April 21, 2010
   • 8 replies
   • 1.4k views
   • 
   • stevebtaylor
   • April 22, 2010

9. Questions Concerning The Planck Epoch

   By thebigdog, January 19, 2015
   • 5 replies
   • 1.4k views
   • 
   • imatfaal
   • January 21, 2015

10. Interplanetary "Tubes"

    By Edtharan, April 1, 2006
    • 3 replies
    • 1.4k views
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    • Cap'n Refsmmat
    • April 2, 2006

11. the Elements

    By YT2095, May 8, 2008
    • 7 replies
    • 1.4k views
    • 
    • Mr Skeptic
    • May 9, 2008

12. Why suspect a holographic universe?

    By wallflash, April 10, 2017
    • 6 replies
    • 1.4k views
    • 
    • Delta1212
    • April 13, 2017

13. Tachyons and Superluminal motion:

    By beecee, February 16, 2020
    • 11 replies
    • 1.4k views
    • 
    • Mordred
    • February 19, 2020

14. Fruit

    By tungstenboy, July 29, 2005
    • 4 replies
    • 1.4k views
    • 
    • Inferno
    • July 30, 2005

15. What would happen if we actually did discover some kind of alien life form?

    By Hypercube, June 9, 2008
    • 5 replies
    • 1.4k views
    • 
    • antimatter
    • June 11, 2008

16. Leonids Meteor Shower Peak.

    By interstellar, November 12, 2008
    • 4 replies
    • 1.4k views
    • 
    • interstellar
    • November 25, 2008

17. does anyone know how I can place images on this forum of models I have to show?

    By The Architekt, May 29, 2012
    • 7 replies
    • 1.4k views
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    • Joatmon
    • May 29, 2012

18. Validity of this Anti-Big Bang theory?

    By GutZ, April 21, 2006
    • 5 replies
    • 1.4k views
    • 
    • Sisyphus
    • April 21, 2006

19. Gravity range?

    By iAmSchrodinger'sCAT, April 11, 2011
    • 4 replies
    • 1.4k views
    • 
    • lemur
    • April 14, 2011

20. Had they finished forming at the same time?

    By TransformerRobot, July 29, 2013
    • 11 replies
    • 1.4k views
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    • Airbrush
    • August 1, 2013

21. Planet's Discovered

    By us.2u, January 14, 2005
    • 8 replies
    • 1.4k views
    • 
    • swansont
    • January 14, 2005

22. Extremophiles on Viking

    By VedekPako, March 7, 2010
    • 4 replies
    • 1.4k views
    • 
    • CaptainPanic
    • March 9, 2010

23. a peculiar diagram

    By michel123456, December 15, 2010
    • 6 replies
    • 1.4k views
    • 
    • michel123456
    • December 18, 2010

24. Aren't planets have orbit because of centrifugal force?

    By Eren, July 19, 2017
    • 7 replies
    • 1.4k views
    • 
    • swansont
    • July 19, 2017

25. Astronomy Site

    By Guest njnightsky, March 7, 2003
    • 1 reply
    • 1.4k views
    • 
    • atinymonkey
    • March 7, 2003