Astronomy and Cosmology

3689 topics in this forum

1. There goes the universe.

   By Arch2008, February 19, 2013
   • 9 replies
   • 1.6k views
   • 
   • SamBridge
   • February 23, 2013

2. There may be 14 antimatter objects hiding in the Milky Way. These objects are called anti-stars.

   By SergUpstart, May 4, 2021
   • 8 replies
   • 1.3k views
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   • swansont
   • May 5, 2021

3. There should be a Real-Time Broadcasting / Streaming of Our Solar System

   By tylers100, October 8, 2020
   • 3 replies
   • 723 views
   • 
   • tylers100
   • October 8, 2020

4. These are questions i NEED to know the answers to

   By sta895, July 9, 2021
   • 2 replies
   • 762 views
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   • beecee
   • July 9, 2021

5. 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
   • 730 views
   • 
   • keremspace
   • May 14, 2022

6. Things affected by space

   By Sly McFly, March 16, 2006
   • 11 replies
   • 1.8k views
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   • Janus
   • March 17, 2006

7. Things We Have Observed

   By BPHgravity, May 22, 2003
   • 0 replies
   • 1.3k views
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   • BPHgravity
   • May 22, 2003

8. This speculative SpaceX timeline reveals roughly when, where, and how Elon Musk plans to colonise Mars 1 2 3

   By beecee, October 15, 2018
   • 53 replies
   • 5k views
   • 
   • beecee
   • October 24, 2018

9. Thomson opacity (split from I finally found an accurate article on the speed of universal expansion) 1 2

   By TEFLing, March 1, 2020
   • 32 replies
   • 16.6k views
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   • Mordred
   • March 11, 2020

10. thought on earth formation

    By dan1dad, September 28, 2008
    • 12 replies
    • 1.4k views
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    • Moontanman
    • October 16, 2008

11. Three-body problem reference frames

    By phate, July 21, 2008
    • 21 replies
    • 5.4k views
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    • phate
    • August 7, 2008

12. Through the Wormhole - atoms = pixels

    By jkoenig00, November 15, 2010
    • 2 replies
    • 3.7k views
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    • swansont
    • November 15, 2010

13. Tiangong-1 uncontrolled reentry

    By Cristiano, June 27, 2017
    • 10 replies
    • 3.1k views
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    • mistermack
    • June 30, 2017

14. Tidal Friction As A Source Of Heat

    By Elen Sila, September 8, 2011
    • 0 replies
    • 1.5k views
    • 
    • Elen Sila
    • September 8, 2011

15. Tidal Gravitational Effects and Frame Dragging:

    By beecee, February 20, 2018
    • 0 replies
    • 634 views
    • 
    • beecee
    • February 20, 2018

16. Tidal Lock

    By Moontanman, September 9, 2016
    • 4 replies
    • 1.1k views
    • 
    • Janus
    • September 10, 2016

17. Tidal locking in a Red Dwarf System - How would large moon affect?

    By Althistorybuff, September 27, 2021
    • 4 replies
    • 1k views
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    • Airbrush
    • October 5, 2021

18. Tides

    By elemental scorpion, September 3, 2018
    • 2 replies
    • 626 views
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    • swansont
    • September 3, 2018

19. tighter Hubble constant value published 2014

    By Mordred, June 9, 2014
    • 0 replies
    • 870 views
    • 
    • Mordred
    • June 9, 2014

20. Time

    By us.2u, March 26, 2005
    • 4 replies
    • 907 views
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    • Sayonara
    • March 27, 2005

21. Time

    By Anura, June 8, 2010
    • 14 replies
    • 1.8k views
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    • Baby Astronaut
    • June 19, 2010

22. time and dimensions

    By awlaskov, October 25, 2010
    • 2 replies
    • 1.1k views
    • 
    • lemur
    • October 31, 2010

23. time and space

    By jamey2k9, February 1, 2009
    • 11 replies
    • 1.6k views
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    • Airbrush
    • February 3, 2009

24. time and space 1 2

    By jamey2k9, March 1, 2009
    • 28 replies
    • 2.8k views
    • 
    • gre
    • March 7, 2009

25. time and space

    By *puffy* japanisthebest, May 11, 2011
    • 1 reply
    • 1.5k views
    • 
    • Spyman
    • May 11, 2011