Astronomy and Cosmology

3685 topics in this forum

1. Homopolar motor rotation in Vacuum

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

2. Black Hole week

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

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

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

4. universal history

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

5. Galaxies or black holes

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

6. Are years getting longer

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

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

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

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

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

9. Has a supernova ever been recorded?

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

10. Flight on an asteroid

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

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

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

12. Heat received from the sun

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

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

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

14. What Makes the E3 Comet Green?

    By exchemist, February 4, 2023
    • 7 replies
    • 675 views
    • 
    • TheVat
    • September 8, 2023

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

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

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

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

17. Are the stars of the constellation stationary?

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

18. Are inflation and expansion relativistic theories?

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

19. The Sunday Promenade on Titan

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

20. Dark Energy

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

21. Can we create Micro Climate Craters on Mars by deflecting Comets? Need Peer Review

    By PhotonBytes, January 7, 2023
    • 0 replies
    • 251 views
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    • PhotonBytes
    • January 7, 2023

22. Nature loves spirals

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

23. dark matter question 1 2 3

    By hoola, January 1, 2023
    • 70 replies
    • 2.7k views
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    • Mordred
    • January 27, 2023

24. How does the light from distant stars get to our eyes?

    By gib65, December 31, 2022
    • 24 replies
    • 1.2k views
    • 
    • studiot
    • January 3, 2023

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

    By geordief, December 25, 2022
    • 28 replies
    • 1.2k views
    • 
    • Mordred
    • February 2, 2023