Astronomy and Cosmology

3712 topics in this forum

1. Ground speed of moon on earth

   By Saber, June 14, 2023
   • 20 replies
   • 1.6k views
   • 
   • Airbrush
   • July 18, 2023

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

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

3. Brown dwarf fusion

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

4. The 2nd biggest bang we know about, 3c186

   By Airbrush, April 3, 2023
   • 17 replies
   • 1.2k views
   • 
   • Mordred
   • May 25, 2023

5. Gravitational pulses looking for clarification

   By Njwythe, May 23, 2023
   • 11 replies
   • 825 views
   • 
   • Genady
   • May 24, 2023

6. Homopolar motor rotation in Vacuum

   By StoyanNikolov, May 5, 2023
   • 3 replies
   • 400 views
   • 
   • StoyanNikolov
   • May 5, 2023

7. Black Hole week

   By paulsutton, May 2, 2023
   • 0 replies
   • 323 views
   • 
   • paulsutton
   • May 2, 2023

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

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

9. universal history

   By Brainee, April 22, 2023
   • 1 reply
   • 479 views
   • 
   • Genady
   • April 22, 2023

10. Are years getting longer

    By Saber, April 12, 2023
    • 7 replies
    • 1k views
    • 
    • swansont
    • April 19, 2023

11. Galaxies or black holes

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

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

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

13. Is the Big Bang theory a complete model of the universe?

    By caryunxwn, January 30, 2023
    • 5 replies
    • 977 views
    • 
    • paulsutton
    • March 11, 2023

14. Has a supernova ever been recorded?

    By gib65, February 25, 2023
    • 6 replies
    • 799 views
    • 
    • Ken Fabian
    • February 27, 2023

15. Flight on an asteroid

    By CrystalMagic, February 19, 2023
    • 0 replies
    • 488 views
    • 
    • CrystalMagic
    • February 19, 2023

16. Methods to Approximate the Rocket Equation with Air Resistances.

    By Flemish, February 14, 2023
    • 3 replies
    • 481 views
    • 
    • sethoflagos
    • February 16, 2023

17. A few Questions about Earths Orbital Speed Around the Sun.

    By TheCuriousMind, February 16, 2023
    • 6 replies
    • 699 views
    • 
    • studiot
    • February 16, 2023

18. Heat received from the sun

    By Saber, February 14, 2023
    • 8 replies
    • 754 views
    • 
    • exchemist
    • February 15, 2023

19. Does the expansion of a quantum system of particles cause the creation of new space? 1 2

    By geordief, December 25, 2022
    • 28 replies
    • 1.7k views
    • 
    • Mordred
    • February 2, 2023

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

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

21. Are the stars of the constellation stationary?

    By lightforyoou, January 26, 2023
    • 11 replies
    • 1.1k views
    • 
    • studiot
    • January 27, 2023

22. dark matter question 1 2 3

    By hoola, January 1, 2023
    • 70 replies
    • 4k views
    • 
    • Mordred
    • January 27, 2023

23. Are inflation and expansion relativistic theories?

    By geordief, January 23, 2023
    • 3 replies
    • 507 views
    • 
    • Genady
    • January 23, 2023

24. The Sunday Promenade on Titan

    By Gian, January 23, 2023
    • 0 replies
    • 312 views
    • 
    • Gian
    • January 23, 2023

25. Dark Energy

    By Agent Smith, January 18, 2023
    • 17 replies
    • 1k views
    • 
    • Genady
    • January 23, 2023