Astronomy and Cosmology

3705 topics in this forum

1. 19.4 earth masses of ice inside Saturn

   By granpa, February 9, 2016
   • 16 replies
   • 2.3k views
   • 
   • imatfaal
   • February 11, 2016

2. Confused about Solar Flares & CMEs

   By GeeKay, February 6, 2016
   • 6 replies
   • 1.2k views
   • 
   • GeeKay
   • February 9, 2016

3. answers to dark matter

   By abstractthinker, February 7, 2016
   • 3 replies
   • 813 views
   • 
   • imatfaal
   • February 7, 2016

4. Siamese Planet?

   By DrmDoc, February 5, 2016
   • 16 replies
   • 2.2k views
   • 
   • DrmDoc
   • February 6, 2016

5. The Paradigm of Types

   By types, February 6, 2016
   • 2 replies
   • 1k views
   • 
   • imatfaal
   • February 6, 2016

6. How long would it take to get to Ceres?

   By Kirin Eldridge, February 2, 2016
   • 3 replies
   • 11.8k views
   • 
   • imatfaal
   • February 2, 2016

7. Sun azimuth at Greenwich meridian...

   By Externet, February 2, 2016
   • 1 reply
   • 859 views
   • 
   • Endy0816
   • February 2, 2016

8. Outer space scanning

   By Ivan Tuzikov, January 4, 2016
   • 6 replies
   • 1.7k views
   • 
   • EdEarl
   • January 27, 2016

9. How are distances to a satellites measured?

   By Bjarne, January 19, 2016
   • 15 replies
   • 1.7k views
   • 
   • Enthalpy
   • January 21, 2016

10. CMB 1 2 3 4

    By David Levy, November 20, 2015
    • 88 replies
    • 11.9k views
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    • swansont
    • January 20, 2016

11. Possibilities and Challenges of Space and Mankind?

    By yashrajkakkad, January 19, 2016
    • 1 reply
    • 932 views
    • 
    • Phi for All
    • January 19, 2016

12. Why would we expect an Anti-Universe to be detectable?

    By TakenItSeriously, January 7, 2016
    • 21 replies
    • 3.1k views
    • 
    • Strange
    • January 17, 2016

13. Rocky planets size

    By Moontanman, January 10, 2016
    • 9 replies
    • 1.5k views
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    • Moontanman
    • January 12, 2016

14. Gravitational lensing of our locally imprinted CMB

    By Sorcerer, January 9, 2016
    • 4 replies
    • 1.2k views
    • 
    • Strange
    • January 10, 2016

15. What came first in spiral galaxy? 1 2 3

    By David Levy, December 13, 2015
    • 53 replies
    • 6.1k views
    • 
    • David Levy
    • January 8, 2016

16. Question regarding black holes

    By CWingfield, January 1, 2016
    • 7 replies
    • 1.3k views
    • 
    • CWingfield
    • January 2, 2016

17. What percentage of the universe is antimatter?

    By Sorcerer, December 18, 2015
    • 6 replies
    • 4.1k views
    • 
    • Strange
    • December 24, 2015

18. What can we really learn about the effects of microgravity?

    By dimreepr, December 15, 2015
    • 5 replies
    • 1.3k views
    • 
    • swansont
    • December 16, 2015

19. Martian Plate Tectonics - or not

    By MigL, December 13, 2015
    • 5 replies
    • 1.3k views
    • 
    • MigL
    • December 15, 2015

20. Holding pen for overly argumentative posts

    By Martin, December 9, 2010
    • 9 replies
    • 8.7k views
    • 
    • hypervalent_iodine
    • December 14, 2015

21. The Finite Universe 1 2

    By Airbrush, October 26, 2015
    • 31 replies
    • 4k views
    • 
    • OConnor_LFC
    • December 14, 2015

22. What Effects Would Slowing Down the Moon Have on the Earth? - A Universe Sandbox Experiment.

    By CazzaBrank, December 11, 2015
    • 7 replies
    • 1.4k views
    • 
    • Phi for All
    • December 11, 2015

23. Dark energy

    By Гера�им, November 11, 2015
    • 5 replies
    • 1.6k views
    • 
    • imatfaal
    • December 11, 2015

24. how to calculate the temperature of cmb over time ?

    By stephaneww, December 10, 2015
    • 2 replies
    • 1.6k views
    • 
    • stephaneww
    • December 10, 2015

25. cosmological constant, dark energy and Hubble radius

    By stephaneww, December 4, 2015
    • 1 reply
    • 1.1k views
    • 
    • stephaneww
    • December 7, 2015