Astronomy and Cosmology

3686 topics in this forum

1. What would happen if...

   By Jimmy Ray, September 21, 2005
   • 8 replies
   • 1.6k views
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   • arkain101
   • September 28, 2005

2. What would happen to the atmosphere on Earth if it was adrift in space?

   By CCWilson, August 11, 2012
   • 13 replies
   • 2.5k views
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   • Moontanman
   • September 14, 2012

3. What would make an alien planet black as coal?

   By trez500, September 25, 2011
   • 5 replies
   • 1.3k views
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   • insane_alien
   • September 26, 2011

4. What would proving there's life on Mars do for science? 1 2

   By CrazCo, January 16, 2009
   • 36 replies
   • 4.2k views
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   • Baby Astronaut
   • January 22, 2009

5. What would SETI pick up from Earth's signals?

   By CaptainPanic, April 22, 2009
   • 2 replies
   • 885 views
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   • Megabrain
   • April 22, 2009

6. what would we need to indentify past martian civilization?

   By mr d, August 9, 2006
   • 9 replies
   • 1.6k views
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   • calbiterol
   • August 12, 2006

7. What's happening if the spacetime is torqued?

   By Linker, October 31, 2012
   • 2 replies
   • 983 views
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   • juanrga
   • November 1, 2012

8. What's in a Black Hole - Can't We Find Out? 1 2

   By jimmydasaint, February 14, 2009
   • 29 replies
   • 3.4k views
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   • Primordial
   • February 17, 2009

9. What's the dealio with the heliosphere?

   By GrandMasterK, December 2, 2015
   • 4 replies
   • 1.4k views
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   • Ophiolite
   • December 3, 2015

10. What's the half life of dark matter?

    By Vexen, March 16, 2019
    • 5 replies
    • 914 views
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    • Strange
    • March 16, 2019

11. whats gonna happen?

    By dripto biswas, February 14, 2013
    • 1 reply
    • 720 views
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    • pwagen
    • February 14, 2013

12. Whats past the singularity of a black hole?

    By kirbsrob, March 14, 2014
    • 7 replies
    • 1.7k views
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    • Mordred
    • May 8, 2014

13. whats the chances of alien life form more intelligent than us?

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

14. whats the difference in an atmosphere and winds?

    By vertigonight, April 3, 2005
    • 4 replies
    • 1.1k views
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    • mezarashi
    • April 5, 2005

15. WHATto build

    By Guest sol, April 17, 2005
    • 0 replies
    • 618 views
    • 
    • Guest
    • April 17, 2005

16. When did humans realize that there are another galaxies?

    By hamburger228, May 25, 2018
    • 5 replies
    • 776 views
    • 
    • Mordred
    • May 26, 2018

17. When Did US Astronauts Rescue Russian Cosmonauts?

    By PS85, November 12, 2014
    • 6 replies
    • 2.4k views
    • 
    • Carrock
    • March 10, 2017

18. when does the universe end

    By Big Nerd, September 24, 2011
    • 12 replies
    • 3k views
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    • JohnStu
    • April 9, 2012

19. When Galaxies collide, supermassive black holes? 1 2

    By The Peon, September 14, 2005
    • 28 replies
    • 3.2k views
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    • BobbyJoeCool
    • September 20, 2005

20. When jupiter and saturn get near earth...

    By Lan Todak, March 31, 2020
    • 2 replies
    • 833 views
    • 
    • pzkpfw
    • March 31, 2020

21. When Schrödinger's Cat meets astronomy

    By MirceaKitsune, August 2, 2014
    • 15 replies
    • 2.1k views
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    • MirceaKitsune
    • August 3, 2014

22. When the sun goes out....

    By frosch45, July 11, 2008
    • 10 replies
    • 1.4k views
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    • Arch2008
    • July 11, 2008

23. When was stabilized the amount of matter and energy in the universe?

    By dapifo, July 23, 2012
    • 3 replies
    • 920 views
    • 
    • dapifo
    • July 25, 2012

24. When we see the past through the telescope, why can we see whole galaxies moving away from us as one whole galaxy, while the stars in the front are younger then the stars we see in the back?

    By Maartenn100, May 2, 2018
    • 9 replies
    • 1.3k views
    • 
    • Maartenn100
    • May 2, 2018

25. When will high traffic space flights begin?

    By alt_f13, August 16, 2004
    • 9 replies
    • 1.6k views
    • 
    • Mad Mardigan
    • October 11, 2004