Astronomy and Cosmology

3708 topics in this forum

1. 103 minutes total lunar eclipse on July 27th 2018 - longest lunar eclipse this century.

   By koti, July 21, 2018
   • 0 replies
   • 595 views
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   • koti
   • July 21, 2018

2. Measuring the Universe with Gravitational waves and GR:

   By beecee, November 18, 2018
   • 0 replies
   • 593 views
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   • beecee
   • November 18, 2018

3. Proving the wormhole

   By QuantumT, April 18, 2019
   • 1 reply
   • 593 views
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   • beecee
   • April 19, 2019

4. Astronomers find 72 bright and fast explosions

   By beecee, April 5, 2018
   • 0 replies
   • 589 views
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   • beecee
   • April 5, 2018

5. Meteorites, Meteoroids, Meteors, Comets, and Asteroids; [and Bolides if you wish:]

   By beecee, April 16, 2019
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   • 589 views
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   • beecee
   • April 16, 2019

6. Consciousness as a universal framework

   By Shane Bellone, May 9, 2018
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   • 583 views
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   • Shane Bellone
   • May 9, 2018

7. Presentation: Worldwide Digital Sundial

   By angelsun, February 28, 2018
   • 0 replies
   • 579 views
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   • angelsun
   • February 28, 2018

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

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

9. Possible Detection of Oort Clouds around other Stars.

   By beecee, August 16, 2018
   • 0 replies
   • 565 views
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   • beecee
   • August 16, 2018

10. Lightning, thunder: Einstein's 'biggest blunder'?

    By KaiduOrkhon, July 20, 2007
    • 0 replies
    • 560 views
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    • KaiduOrkhon
    • July 20, 2007

11. Happy New Year, astronauts!

    By Kevin_Hall, December 31, 2021
    • 0 replies
    • 553 views
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    • Kevin_Hall
    • December 31, 2021

12. Astrochemical Thought Experiment

    By Anchovyforestbane, November 17, 2020
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    • 548 views
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    • Anchovyforestbane
    • November 17, 2020

13. Is the Sun "lumpy" on the inside??

    By tsmspace, October 11, 2023
    • 7 replies
    • 542 views
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    • mistermack
    • October 11, 2023

14. The Milky Way has Trapped the Large Magellanic Cloud With its Gravity.

    By paulsutton, April 25, 2023
    • 2 replies
    • 533 views
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    • TheVat
    • April 25, 2023

15. Lunar Corona or Halo?

    By sethoflagos, November 23, 2023
    • 0 replies
    • 529 views
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    • sethoflagos
    • November 23, 2023

16. Interesting way to look at mother earth using a balloon and some good music !

    By dbFrame, February 13, 2013
    • 0 replies
    • 528 views
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    • dbFrame
    • February 13, 2013

17. The 'Ugly Head' of Einstein's Abandoned Cosmological Constant

    By KaiduOrkhon, April 19, 2007
    • 0 replies
    • 525 views
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    • KaiduOrkhon
    • April 19, 2007

18. Dark energy with negative and positive kinetic energy and the Big Rip

    By xX_minecraftMLGPRO2019_Xx, December 13, 2022
    • 4 replies
    • 518 views
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    • xX_minecraftMLGPRO2019_Xx
    • December 17, 2022

19. could the moon be the remains of a planet that collided with earth?

    By boo, May 18, 2023
    • 2 replies
    • 516 views
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    • Airbrush
    • June 29, 2023

20. Hall Thrusters

    By Photon Guy, December 5, 2023
    • 3 replies
    • 501 views
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    • TheVat
    • December 5, 2023

21. Musings of a mad scientist (inflation as cosmological constant)

    By Mordred, December 24, 2022
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    • 496 views
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    • Mordred
    • December 24, 2022

22. Nature loves spirals

    By studiot, January 5, 2023
    • 6 replies
    • 496 views
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    • Genady
    • January 6, 2023

23. Monolith asteroids: a Silent Order.

    By GeeKay, April 5
    • 2 replies
    • 496 views
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    • GeeKay
    • April 5

24. Galaxies or black holes

    By Brainee, April 14, 2023
    • 6 replies
    • 493 views
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    • Airbrush
    • April 19, 2023

25. Universe related questions

    By Bobdihi, May 24
    • 1 reply
    • 477 views
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    • Phi for All
    • May 24