Astronomy and Cosmology

3693 topics in this forum

1. Frank Drake (1930 - 2022)

   By toucana, September 3, 2022
   • 1 reply
   • 690 views
   • 
   • Airbrush
   • September 8, 2022

2. Big Bang theory 1 2 3

   By amshion, October 17, 2021
   • 68 replies
   • 6.2k views
   • 
   • Mitcher
   • September 4, 2022

3. I need help understanding something.

   By nonameyet, September 1, 2022
   • 3 replies
   • 725 views
   • 
   • iNow
   • September 2, 2022

4. are we trying to look out of a black hole when trying to look at the past of the big bang ?

   By raphaelh42, July 14, 2022
   • 13 replies
   • 1.6k views
   • 
   • joigus
   • August 25, 2022

5. Stars revolving on the sky...

   By Externet, August 19, 2022
   • 1 reply
   • 582 views
   • 
   • Sensei
   • August 19, 2022

6. Does cosmic expansion ever end?

   By geordief, July 28, 2022
   • 7 replies
   • 860 views
   • 
   • Airbrush
   • August 14, 2022

7. Planetary atmospheres

   By Moontanman, August 10, 2022
   • 16 replies
   • 978 views
   • 
   • Moontanman
   • August 13, 2022

8. Living away from earth (split from Mars gravity issue) 1 2

   By mistermack, January 12, 2022
   • 28 replies
   • 2.8k views
   • 
   • mistermack
   • August 7, 2022

9. Mond beats Dark Matter

   By QuantumT, July 11, 2022
   • 19 replies
   • 2.2k views
   • 
   • Markus Hanke
   • July 23, 2022

10. Red Shift Question

    By Fly135, July 21, 2022
    • 2 replies
    • 583 views
    • 
    • Fly135
    • July 23, 2022

11. What dictates the size of a star?

    By Kurious12, April 29, 2022
    • 13 replies
    • 1.4k views
    • 
    • swansont
    • July 12, 2022

12. Is the universe really 13.7 billion years old?

    By Kurious12, May 31, 2022
    • 12 replies
    • 1.9k views
    • 
    • Airbrush
    • July 11, 2022

13. An absurd search for dark matter

    By Enteves, June 5, 2022
    • 1 reply
    • 671 views
    • 
    • swansont
    • June 5, 2022

14. controllable universe?

    By Danijel Gorupec, May 28, 2022
    • 8 replies
    • 1.1k views
    • 
    • beecee
    • May 29, 2022

15. They report their independent image reconstruction of the M87 from the public data of the EHTC. Their result is different from the image published by the EHTC.

    By keremspace, May 14, 2022
    • 3 replies
    • 756 views
    • 
    • keremspace
    • May 14, 2022

16. Does our moon affect Earth's core

    By Kurious12, May 1, 2022
    • 21 replies
    • 3.3k views
    • 
    • Kurious12
    • May 9, 2022

17. what is the value of the acceleration of the expansion of the universe?

    By stephaneww, April 28, 2022
    • 0 replies
    • 584 views
    • 
    • stephaneww
    • April 28, 2022

18. So there is no need for bigbang-theory?

    By Hello2, September 11, 2020
    • 8 replies
    • 1.7k views
    • 
    • beecee
    • April 17, 2022

19. Is Destiny’s ‘syzygy’-‘god wave’ concept scientifically plausible?

    By Fanghur, April 17, 2022
    • 1 reply
    • 861 views
    • 
    • exchemist
    • April 17, 2022

20. Where no man has gone before

    By Gian, April 3, 2022
    • 2 replies
    • 711 views
    • 
    • Genady
    • April 3, 2022

21. Please delete this post

    By icarus2, March 23, 2022
    • 1 reply
    • 691 views
    • 
    • Phi for All
    • March 23, 2022

22. Weight Loss during Solar Eclipse

    By Encryptor, October 16, 2017
    • 6 replies
    • 2.8k views
    • 
    • swansont
    • February 15, 2022

23. James Webb Telescope and L2 Orbit Question 1 2 3

    By exchemist, December 30, 2021
    • 55 replies
    • 5.2k views
    • 
    • Airbrush
    • February 10, 2022

24. The Copernican principle

    By __Ben__, January 28, 2022
    • 13 replies
    • 1.3k views
    • 
    • Johnmo89
    • February 4, 2022

25. Closed Dyson sphere : is it really impossible ?

    By Edgard Neuman, January 24, 2022
    • 18 replies
    • 1.7k views
    • 
    • Edgard Neuman
    • January 30, 2022