Astronomy and Cosmology

3705 topics in this forum

1. Precession of the perihelion of earth

   By Bjarne, March 29, 2016
   • 1 reply
   • 1.2k views
   • 
   • Enthalpy
   • April 6, 2016

2. The beginning and end of the universe? 1 2

   By SimonFunnell, March 31, 2016
   • 29 replies
   • 4.1k views
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   • hypervalent_iodine
   • April 6, 2016

3. Supernova Rate in Milky Way, why low?

   By EdEarl, March 26, 2016
   • 6 replies
   • 1.7k views
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   • Raider5678
   • March 30, 2016

4. Lambda-CDM (supposition vs. evidence)

   By shmengie, March 26, 2016
   • 14 replies
   • 1.9k views
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   • Klaynos
   • March 27, 2016

5. Pet Peeves About Documentaries

   By Airbrush, March 8, 2016
   • 8 replies
   • 1.4k views
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   • Airbrush
   • March 22, 2016

6. Are LIGO detectors the evolution of the Michelson Morley experiment?

   By shmengie, March 22, 2016
   • 1 reply
   • 787 views
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   • Strange
   • March 22, 2016

7. A habitable Planet... 1 2 3

   By Aigbusted, November 10, 2007
   • 60 replies
   • 8.2k views
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   • Airbrush
   • March 11, 2016

8. Best books?

   By Deesk06, March 5, 2016
   • 8 replies
   • 2k views
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   • Deesk06
   • March 9, 2016

9. Could we detect a Dyson Swarm?

   By 3blake7, March 8, 2016
   • 3 replies
   • 1.7k views
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   • 3blake7
   • March 9, 2016

10. Matter out of black holes?

    By johnandrew, March 7, 2016
    • 8 replies
    • 1.7k views
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    • johnandrew
    • March 8, 2016

11. The Paradox 1 2 3

    By David Levy, February 29, 2016
    • 56 replies
    • 6.2k views
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    • Endy0816
    • March 8, 2016

12. space time

    By Andylee1, February 28, 2016
    • 2 replies
    • 1.1k views
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    • Strange
    • February 28, 2016

13. New mass creation 1 2

    By David Levy, February 20, 2016
    • 40 replies
    • 5.1k views
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    • David Levy
    • February 27, 2016

14. Search for signs of Intelligent ET's in the Solar System 1 2

    By Ivan Tuzikov, February 17, 2016
    • 29 replies
    • 3k views
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    • Airbrush
    • February 25, 2016

15. Properties of Expansion

    By TakenItSeriously, February 18, 2016
    • 13 replies
    • 1.9k views
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    • TakenItSeriously
    • February 23, 2016

16. What dates are accepted for the age of the Sun? 1 2 3 4 8

    By Robittybob1, February 9, 2016
    • 195 replies
    • 14k views
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    • hypervalent_iodine
    • February 23, 2016

17. Star formation questions (split from age of sun)

    By David Levy, February 22, 2016
    • 3 replies
    • 1.1k views
    • 
    • swansont
    • February 23, 2016

18. A telescope's Limiting Magnitude

    By GeeKay, February 20, 2016
    • 5 replies
    • 1.4k views
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    • GeeKay
    • February 21, 2016

19. Collision during relatively fast interstellar travel

    By Ivan Tuzikov, February 16, 2016
    • 21 replies
    • 2.9k views
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    • TakenItSeriously
    • February 19, 2016

20. Relative model of the universe 1 2

    By michel123456, February 7, 2016
    • 43 replies
    • 4.4k views
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    • TakenItSeriously
    • February 15, 2016

21. Universe Expansion 1 2 3 4

    By David Levy, January 1, 2016
    • 84 replies
    • 8.6k views
    • 
    • swansont
    • February 13, 2016

22. Gravitational waves and time travel

    By petrushka.googol, February 13, 2016
    • 1 reply
    • 1.1k views
    • 
    • imatfaal
    • February 13, 2016

23. Our universe exists inside a black hole?

    By Greencanon, February 10, 2016
    • 10 replies
    • 1.9k views
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    • Mordred
    • February 13, 2016

24. Detection of torchships by exhaust plume 1 2

    By Ivan Tuzikov, February 3, 2016
    • 34 replies
    • 3.1k views
    • 
    • Ivan Tuzikov
    • February 12, 2016

25. is astrology really a pseudoscience? [yes] 1 2

    By ark200, February 21, 2015
    • 39 replies
    • 5.7k views
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    • Mordred
    • February 12, 2016