Astronomy and Cosmology

3705 topics in this forum

1. Planet 9 and a 3 million years ago Stellar Flyby:

   By beecee, February 28, 2019
   • 0 replies
   • 565 views
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   • beecee
   • February 28, 2019

2. Sunrise to sunset lapse... on the moon.

   By Externet, February 25, 2019
   • 3 replies
   • 762 views
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   • Airbrush
   • February 28, 2019

3. Earth's Geocorona Goes Beyond the Moon

   By QuantumT, February 26, 2019
   • 3 replies
   • 611 views
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   • QuantumT
   • February 26, 2019

4. Photons & Cosmic Expansion 1 2

   By QuantumT, February 21, 2019
   • 40 replies
   • 2.9k views
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   • StringJunky
   • February 25, 2019

5. Hypervelocity Supermassive Black Hole 1 2

   By Airbrush, February 6, 2019
   • 32 replies
   • 2.9k views
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   • swansont
   • February 22, 2019

6. Need help with density parameters of the LambdaCDM model 1 2

   By stephaneww, February 10, 2019
   • 28 replies
   • 2k views
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   • stephaneww
   • February 18, 2019

7. Photon Fueled Cosmic Acceleration

   By QuantumT, February 16, 2019
   • 3 replies
   • 746 views
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   • swansont
   • February 17, 2019

8. Key to the space exploration?

   By Jibbek, February 12, 2019
   • 2 replies
   • 650 views
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   • beecee
   • February 12, 2019

9. Q about black holes (split from Black Hole Energy Distribution)

   By Airbrush, January 31, 2019
   • 15 replies
   • 1k views
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   • Mordred
   • February 2, 2019

10. Exploring Titan

    By Gian, May 10, 2018
    • 4 replies
    • 1.5k views
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    • MigL
    • February 2, 2019

11. How Did Uranus End Up On It's Side?

    By scienceafrique, January 25, 2019
    • 3 replies
    • 874 views
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    • Airbrush
    • January 25, 2019

12. Flash on the during the Lunar eclipse - static discharge?

    By gfellow, January 23, 2019
    • 11 replies
    • 1.2k views
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    • Janus
    • January 24, 2019

13. Could Black Holes be the hottest things in the Universe?

    By coderage9100, January 18, 2019
    • 16 replies
    • 1.8k views
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    • Strange
    • January 20, 2019

14. Van de Graaff generator on the Moon

    By harlock, January 17, 2019
    • 5 replies
    • 834 views
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    • Endy0816
    • January 18, 2019

15. Energy contained in the magnetic field 1 2

    By Danijel Gorupec, January 1, 2019
    • 36 replies
    • 2.9k views
    • 
    • Phi for All
    • January 15, 2019

16. Rocks falling into the sun

    By Edwina Lee, January 14, 2019
    • 1 reply
    • 763 views
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    • mathematic
    • January 14, 2019

17. Exclusive: Grave doubts over LIGO’s discovery of gravitational waves

    By beecee, November 16, 2018
    • 19 replies
    • 2.9k views
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    • beecee
    • January 13, 2019

18. Solving the Mysteries of FRB's:

    By beecee, November 27, 2018
    • 4 replies
    • 1.1k views
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    • yang5987
    • January 13, 2019

19. Vector theory of Gravity 1 2 3 4 6

    By coffeesippin, November 20, 2018
    • 126 replies
    • 11k views
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    • beecee
    • January 12, 2019

20. Was the first picosecond really a picosecond?

    By gib65, December 30, 2018
    • 3 replies
    • 973 views
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    • beecee
    • December 30, 2018

21. New Horizons Flyby of Ultima Thule on Jan 1st

    By Airbrush, December 30, 2018
    • 0 replies
    • 587 views
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    • Airbrush
    • December 30, 2018

22. Habitable zone of a star

    By AXdlv, December 22, 2018
    • 22 replies
    • 2k views
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    • peglerbc
    • December 29, 2018

23. Why we mark a New Year January 1?

    By Moreno, December 26, 2018
    • 10 replies
    • 1.3k views
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    • dimreepr
    • December 27, 2018

24. Questions around the LambdaCDM model and a classical mechanics model of universe

    By stephaneww, December 8, 2018
    • 5 replies
    • 895 views
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    • stephaneww
    • December 26, 2018

25. Quasi-Steady State Model and the Expanding Universe

    By Heisenberg1927, December 23, 2018
    • 10 replies
    • 1.6k views
    • 
    • Carrock
    • December 23, 2018