Astronomy and Cosmology

3708 topics in this forum

1. A question about the big bang

   By The 321 Anomaly, July 21, 2009
   • 6 replies
   • 1.7k views
   • 
   • tar
   • August 8, 2009

2. Dawn's approach to Vesta (orbit planned for August)

   By Martin, October 23, 2010
   • 2 replies
   • 1.7k views
   • 
   • Martin
   • October 28, 2010

3. Space dimensions

   By Tesseract999, August 2, 2019
   • 16 replies
   • 1.7k views
   • 
   • Strange
   • August 3, 2019

4. Andromeda Galaxy

   By purintjp, January 28, 2010
   • 11 replies
   • 1.7k views
   • 
   • Martin
   • February 2, 2010

5. A Closed Timelike Universe

   By ydoaPs, May 1, 2012
   • 5 replies
   • 1.7k views
   • 
   • Royston
   • May 2, 2012

6. question about planets

   By Alphy420, September 29, 2005
   • 11 replies
   • 1.7k views
   • 
   • swansont
   • October 1, 2005

7. A viewpoint.

   By kenshin, March 16, 2006
   • 9 replies
   • 1.7k views
   • 
   • Norman Albers
   • March 19, 2006

8. Nebular hypothesis

   By Bilal Hussain, October 17, 2013
   • 10 replies
   • 1.7k views
   • 
   • Strange
   • October 21, 2013

9. Depth of curved spacetime in blackhole

   By Ashish, August 3, 2010
   • 1 reply
   • 1.7k views
   • 
   • Sunil
   • August 11, 2010

10. Attempt to prove the Big Bang by contradiction.

    By SHtRO, June 8, 2005
    • 5 replies
    • 1.7k views
    • 
    • SHtRO
    • July 29, 2005

11. Galactic Pairs

    By Skaffen, November 9, 2010
    • 8 replies
    • 1.7k views
    • 
    • Skaffen
    • November 9, 2010

12. Mercury perihelion precission

    By Obelix, January 6, 2012
    • 8 replies
    • 1.7k views
    • 
    • D H
    • January 9, 2012

13. Help me with telescope

    By tentacle, August 23, 2014
    • 8 replies
    • 1.7k views
    • 
    • tentacle
    • August 30, 2014

14. Orbital Resonances

    By Elen Sila, August 30, 2011
    • 3 replies
    • 1.7k views
    • 
    • csmyth3025
    • August 31, 2011

15. Gravity Waves and LIGO...

    By YT2095, January 30, 2008
    • 11 replies
    • 1.7k views
    • 
    • YT2095
    • January 31, 2008

16. Was the start of the Big Bang really the beginning of time?

    By Cosmo_Ken, January 9, 2017
    • 14 replies
    • 1.7k views
    • 
    • Strange
    • January 24, 2017

17. inflation

    By devrimci_kürt, November 18, 2009
    • 5 replies
    • 1.7k views
    • 
    • ajb
    • November 18, 2009

18. Is Dark Matter really necessary?

    By Lazarus, July 27, 2018
    • 24 replies
    • 1.7k views
    • 
    • StringJunky
    • August 3, 2018

19. why planets are round ?

    By mab, September 17, 2004
    • 9 replies
    • 1.7k views
    • 
    • Halash
    • September 17, 2004

20. dust and gas around black holes

    By 36grit, October 18, 2011
    • 6 replies
    • 1.7k views
    • 
    • *puffy* japanisthebest
    • October 19, 2011

21. No big bang?

    By Sorcerer, October 29, 2015
    • 11 replies
    • 1.7k views
    • 
    • Sorcerer
    • October 31, 2015

22. blackholes

    By shadow2121, July 11, 2008
    • 9 replies
    • 1.7k views
    • 
    • Edtharan
    • July 11, 2008

23. if i launched a rocket out my back yard when would it have to be to get to the moon.

    By cameron marical, February 2, 2009
    • 8 replies
    • 1.7k views
    • 
    • Airbrush
    • February 5, 2009

24. Only Jupiter protects us?

    By Airbrush, August 6, 2013
    • 4 replies
    • 1.7k views
    • 
    • Delta1212
    • August 8, 2013

25. Help with a (seeming) discrepancy?

    By Baby Astronaut, December 17, 2009
    • 7 replies
    • 1.7k views
    • 
    • Martin
    • January 17, 2010