Astronomy and Cosmology

3692 topics in this forum

1. Universal Expansion Alternative Theory

   By Charon, September 9, 2022
   • 2 replies
   • 735 views
   • 
   • swansont
   • September 9, 2022

2. Please, tell what objects

   By RomanRodinskiy, November 26, 2022
   • 2 replies
   • 610 views
   • 
   • joigus
   • November 26, 2022

3. Hydrogen thermal equilibrium decoupling

   By Mordred, December 15, 2022
   • 2 replies
   • 398 views
   • 
   • Mordred
   • December 16, 2022

4. Mars magnetic field (split from Mars and the dim sun paradox)

   By CrystalMagic, January 29, 2023
   • 2 replies
   • 408 views
   • 
   • studiot
   • January 30, 2023

5. A Query About Books - Specifically Around the Subjects of Supernovae and Stellar Remenants

   By RyanJ, April 3, 2023
   • 2 replies
   • 358 views
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   • Genady
   • April 10, 2023

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

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

7. Brown dwarf fusion

   By Moontanman, June 5, 2023
   • 2 replies
   • 298 views
   • 
   • swansont
   • June 5, 2023

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

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

9. What ratio of time is the ISS in sunlight?

   By md65536, November 1, 2023
   • 2 replies
   • 477 views
   • 
   • md65536
   • November 1, 2023

10. The Speed of Light

    By Chris Sawatsky, November 2, 2023
    • 2 replies
    • 384 views
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    • Halc
    • November 5, 2023

11. Space Exploration Within Our Solar System

    By Chris Sawatsky, January 11
    • 2 replies
    • 277 views
    • 
    • Phi for All
    • January 12

12. Monolith asteroids: a Silent Order.

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

13. Why I saw the moon being ~twice size as usual?

    By raphaelh42, May 4
    • 2 replies
    • 173 views
    • 
    • raphaelh42
    • May 5

14. Astronomy Site

    By Guest njnightsky, March 7, 2003
    • 1 reply
    • 1.3k views
    • 
    • atinymonkey
    • March 7, 2003

15. The Silent Black Hole

    By Radical Edward, April 25, 2003
    • 1 reply
    • 1.6k views
    • 
    • fafalone
    • April 25, 2003

16. once in MANY lifetimes

    By YT2095, August 8, 2003
    • 1 reply
    • 1.2k views
    • 
    • Loki
    • August 17, 2003

17. Distribution of matter

    By Guest devilish1182, December 18, 2003
    • 1 reply
    • 1.1k views
    • 
    • VendingMenace
    • December 18, 2003

18. Black hole munches star

    By Skye, February 21, 2004
    • 1 reply
    • 1.1k views
    • 
    • NSX
    • February 21, 2004

19. Good maps of mars?

    By Aliasalpha, February 28, 2004
    • 1 reply
    • 1.2k views
    • 
    • Duke
    • February 29, 2004

20. Build your own telescope.

    By admiral_ju00, May 15, 2004
    • 1 reply
    • 1.1k views
    • 
    • YT2095
    • May 15, 2004

21. Mond

    By Guest VictorF., May 26, 2004
    • 1 reply
    • 1.1k views
    • 
    • admiral_ju00
    • May 27, 2004

22. Supernova

    By DarthDooku, July 28, 2004
    • 1 reply
    • 1k views
    • 
    • Guest
    • July 28, 2004

23. lepton/quark asymmetry with antimatter

    By 1veedo, December 26, 2004
    • 1 reply
    • 1k views
    • 
    • aguy2
    • December 26, 2004

24. Rocketplane

    By Molotov, February 25, 2005
    • 1 reply
    • 874 views
    • 
    • RICHARDBATTY
    • February 25, 2005

25. Are irregular satellites defined as those with asymmetric albedo patterns?

    By vertigonight, March 18, 2005
    • 1 reply
    • 840 views
    • 
    • Ophiolite
    • March 19, 2005