Astronomy and Cosmology

3686 topics in this forum

1. What kind of element could never be naturally found in a star?

   By Maximum7, August 30, 2021
   • 2 replies
   • 694 views
   • 
   • swansont
   • August 30, 2021

2. What makes supernova explode? 1 2

   By alpha2cen, December 2, 2010
   • 39 replies
   • 6.2k views
   • 
   • swansont
   • December 9, 2010

3. What Makes the E3 Comet Green?

   By exchemist, February 4, 2023
   • 7 replies
   • 680 views
   • 
   • TheVat
   • September 8, 2023

4. What makes them do this?

   By Mart, October 30, 2005
   • 5 replies
   • 1.3k views
   • 
   • swansont
   • October 31, 2005

5. What measures if any will ever be put in place to defend from asteroids?

   By Juryoku, February 21, 2011
   • 5 replies
   • 1.9k views
   • 
   • Mrs Zeta
   • February 21, 2011

6. What news from the LHC?

   By Airbrush, April 2, 2010
   • 8 replies
   • 1.2k views
   • 
   • insane_alien
   • April 3, 2010

7. What percentage of the universe is antimatter?

   By Sorcerer, December 18, 2015
   • 6 replies
   • 4k views
   • 
   • Strange
   • December 24, 2015

8. What planet is this?

   By mistykasumi, May 12, 2018
   • 8 replies
   • 872 views
   • 
   • Eise
   • May 13, 2018

9. what possibility pluto is uncaptured moon

   By mr d, November 3, 2005
   • 3 replies
   • 951 views
   • 
   • mr d
   • November 9, 2005

10. What Powers Quasars?

    By Airbrush, December 3, 2010
    • 24 replies
    • 6.8k views
    • 
    • insane_alien
    • December 23, 2010

11. What ratio of time is the ISS in sunlight?

    By md65536, November 1, 2023
    • 2 replies
    • 399 views
    • 
    • md65536
    • November 1, 2023

12. What temperature is space? 1 2

    By onemind, March 25, 2005
    • 34 replies
    • 3.2k views
    • 
    • J.C.MacSwell
    • March 28, 2005

13. What the heck is that thing next to the Moon???

    By CaptainHawk1, March 27, 2008
    • 19 replies
    • 2.5k views
    • 
    • Cmac22
    • April 29, 2008

14. What type of undergrad study would allow me to do Planetary Science

    By Tokage, January 25, 2011
    • 3 replies
    • 862 views
    • 
    • Marat
    • January 25, 2011

15. What was before the BB? 1 2

    By Alubadi21, April 13, 2017
    • 29 replies
    • 3.6k views
    • 
    • goldglow
    • April 19, 2017

16. What was the Singularity point before the Big Bang?

    By Blind Watchmaker, December 23, 2019
    • 7 replies
    • 1.1k views
    • 
    • Strange
    • December 24, 2019

17. what was there before Big Bang? 1 2 3 4 7

    By nernico, June 30, 2011
    • 166 replies
    • 23.3k views
    • 
    • space noob
    • May 9, 2012

18. what was there? 1 2

    By swaha, July 21, 2009
    • 42 replies
    • 5.4k views
    • 
    • rockman
    • August 12, 2009

19. what we see 1 2 3

    By michel123456, November 13, 2011
    • 65 replies
    • 10.6k views
    • 
    • md65536
    • November 28, 2011

20. What would a neutron star look like?

    By Fanghur, March 10, 2013
    • 4 replies
    • 1.5k views
    • 
    • StringJunky
    • March 11, 2013

21. What would a perfect solar storm do to modern society?

    By bascule, November 3, 2009
    • 13 replies
    • 1.6k views
    • 
    • Mr Skeptic
    • November 4, 2009

22. What would be the size of the event horizon for the whole universe

    By Neil9327, February 14, 2010
    • 2 replies
    • 950 views
    • 
    • ajb
    • February 15, 2010

23. What would happen if Earths magnetic field turned off?

    By Inquisitor, March 27, 2009
    • 23 replies
    • 11.1k views
    • 
    • rebelion
    • April 19, 2009

24. What would happen if the universe stopped expanding?

    By astro geek, January 17, 2010
    • 8 replies
    • 8.2k views
    • 
    • Airbrush
    • January 26, 2010

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

    By Hypercube, June 9, 2008
    • 5 replies
    • 1.3k views
    • 
    • antimatter
    • June 11, 2008