Astronomy and Cosmology

3710 topics in this forum

1. Interstellar, the Movie

   By Airbrush, November 16, 2014
   • 8 replies
   • 2.1k views
   • 
   • GeeKay
   • January 10, 2015

2. Lunar Inclination, why does it vary ?

   By Bjarne, January 10, 2015
   • 6 replies
   • 1.6k views
   • 
   • Bjarne
   • January 10, 2015

3. A Milky Quasar?

   By GeeKay, January 6, 2015
   • 7 replies
   • 1.5k views
   • 
   • Airbrush
   • January 10, 2015

4. Lunar Inclination anomaly - Is it true ?

   By Bjarne, January 3, 2015
   • 3 replies
   • 1.9k views
   • 
   • Bjarne
   • January 8, 2015

5. How does limb Darkening affect the radius calculated?

   By physica, January 6, 2015
   • 3 replies
   • 2.6k views
   • 
   • imatfaal
   • January 7, 2015

6. Feedback desired on an expansion respresentation

   By Endy0816, January 5, 2015
   • 4 replies
   • 1.1k views
   • 
   • Endy0816
   • January 5, 2015

7. Energy Equations !

   By Commander, January 2, 2015
   • 16 replies
   • 2.1k views
   • 
   • Strange
   • January 2, 2015

8. why most of space videos & images are CGI?

   By Ganesh Ujwal, December 30, 2014
   • 14 replies
   • 4.5k views
   • 
   • MigL
   • January 2, 2015

9. formula for relationship between mass and time?

   By godofgamblers, December 30, 2014
   • 2 replies
   • 1k views
   • 
   • godofgamblers
   • January 1, 2015

10. some questions from non-science guy

    By godofgamblers, December 24, 2014
    • 19 replies
    • 2.1k views
    • 
    • godofgamblers
    • December 29, 2014

11. looking at the solar system

    By michel123456, March 2, 2013
    • 11 replies
    • 3.3k views
    • 
    • StringJunky
    • December 28, 2014

12. How is the Horizon Problem really a problem?

    By Ganesh Ujwal, December 23, 2014
    • 5 replies
    • 1.9k views
    • 
    • Mordred
    • December 28, 2014

13. Why is the day sky blue?

    By dstebbins, December 21, 2014
    • 8 replies
    • 2k views
    • 
    • Eise
    • December 23, 2014

14. Cosmic rays and neutrinos

    By Ganesh Ujwal, December 22, 2014
    • 3 replies
    • 1.1k views
    • 
    • Mordred
    • December 22, 2014

15. Two Halves that don't make a whole

    By LaurieAG, December 18, 2014
    • 3 replies
    • 1.5k views
    • 
    • LaurieAG
    • December 22, 2014

16. Suppose that I am looking in my telescope to a distant star 1 2 3 4 6

    By michel123456, November 22, 2014
    • 140 replies
    • 14.8k views
    • 
    • Ophiolite
    • December 20, 2014

17. Basic Holographic Principle question

    By incompetence, December 18, 2014
    • 3 replies
    • 1.1k views
    • 
    • Endy0816
    • December 20, 2014

18. The CMB, how is that possible? 1 2

    By michel123456, November 1, 2014
    • 45 replies
    • 6.1k views
    • 
    • imatfaal
    • December 17, 2014

19. Multiverses, wow that's big!

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

20. What direction is the big bang? (split from telescope looking at a distant star)

    By nullus, November 23, 2014
    • 12 replies
    • 1.9k views
    • 
    • swansont
    • November 27, 2014

21. Astrophotography Contest

    By Eve, November 26, 2014
    • 0 replies
    • 1k views
    • 
    • Eve
    • November 26, 2014

22. Evaporation of a black hole

    By afm, November 14, 2014
    • 2 replies
    • 1.2k views
    • 
    • MigL
    • November 14, 2014

23. Comet/Meteor Impact with Earth - split from Rosetta

    By kristalris, November 14, 2014
    • 5 replies
    • 1.5k views
    • 
    • Ophiolite
    • November 14, 2014

24. New telescope array captures planet-forming disk

    By sunshaker, November 12, 2014
    • 6 replies
    • 1.6k views
    • 
    • Robittybob1
    • November 12, 2014

25. Do You Think Dark Matter and Dark Energy Is Related?

    By Future JPL Space Engineer, October 30, 2014
    • 10 replies
    • 1.7k views
    • 
    • michel123456
    • November 3, 2014