Astronomy and Space

1,477 topics in this forum

1. The problem of crushing Starship

   By bearnard55, January 5, 2021
   • 0 replies
   • 445 views
   • 
   • bearnard55
   • January 5, 2021

2. A Quantum Mechanical Interpretation of the Consequences of Special Relativity

   By jamesfairclear, January 3, 2021   

   • time dilation
   • special relativity
   • (and 1 more)

     Tagged with:

     • time dilation
     • special relativity
     • quantum theory
   • 1 reply
   • 702 views
   • 
   • LaurieAG
   • January 4, 2021

3. The water on Mars

   By bearnard55, December 31, 2020
   • 1 reply
   • 617 views
   • 
   • OceanBreeze
   • January 2, 2021

4. The most advanced space tech

   By bearnard55, December 30, 2020
   • 0 replies
   • 457 views
   • 
   • bearnard55
   • December 30, 2020

5. Microsatellites

   By bearnard55, December 29, 2020
   • 0 replies
   • 381 views
   • 
   • bearnard55
   • December 29, 2020

6. The journey to the red planet

   By bearnard55, December 29, 2020
   • 0 replies
   • 382 views
   • 
   • bearnard55
   • December 29, 2020

7. What happened to Mars? 1 2 3 4 5

   By Anchovyforestbane, September 22, 2020
   • 82 replies
   • 5.8k views
   • 
   • Anchovyforestbane
   • November 22, 2020

8. Capture Image Of Black Hole

   By hazelm, April 10, 2019
   • 3 replies
   • 1.4k views
   • 
   • amateurastronomer
   • November 5, 2020

9. Argon Thought Experiment

   By Anchovyforestbane, November 2, 2020   

   • astrochemistry
   • 0 replies
   • 605 views
   • 
   • Anchovyforestbane
   • November 2, 2020

10. The First Object Launched Into Space

    By Vmedvil2, June 21, 2019
    • 2 replies
    • 1.4k views
    • 
    • Josmellon
    • October 30, 2020

11. Can astrology have a scientific basis? 1 2 3 4 5

    By hallenrm, February 20, 2006
    • 76 replies
    • 13.8k views
    • 
    • Josmellon
    • October 30, 2020

12. Do You Think There Are Planets Around Alpha Centauri?

    By alfa015, April 9, 2020
    • 1 reply
    • 1k views
    • 
    • Josmellon
    • October 30, 2020

13. Black Holes Are Like A Hologram

    By Thoth101, June 14, 2020
    • 2 replies
    • 1k views
    • 
    • Josmellon
    • October 30, 2020

14. What Kind Of Universe Is Suitable For Life?

    By ScienceAndUniverse, June 19, 2020
    • 1 reply
    • 815 views
    • 
    • Josmellon
    • October 30, 2020

15. How Can The Universe Expand Faster Than Light?

    By ScienceAndUniverse, June 20, 2020   

    • expansion of universe
    • faster than light
    • (and 1 more)

      Tagged with:

      • expansion of universe
      • faster than light
      • speed of light
    • 4 replies
    • 958 views
    • 
    • Josmellon
    • October 30, 2020

16. Black Holes Explained - 5 Ways To Know They Exist

    By ScienceAndUniverse, June 21, 2020   

    • black hole
    • black hole explained
    • (and 1 more)

      Tagged with:

      • black hole
      • black hole explained
      • how do we know
    • 9 replies
    • 1.2k views
    • 
    • Josmellon
    • October 30, 2020

17. Universal Perpetual Machine

    By petrushkagoogol, October 8, 2020
    • 5 replies
    • 658 views
    • 
    • Josmellon
    • October 30, 2020

18. Interesting facts you should know before you die

    By Josmellon, October 30, 2020
    • 0 replies
    • 436 views
    • 
    • Josmellon
    • October 30, 2020

19. #4 SIRIUS_ from Dr Steven Greer - Original Full-Length Documentary Film

    By Thoth101, October 24, 2020
    • 10 replies
    • 684 views
    • 
    • Thoth101
    • October 30, 2020

20. Planet go boom

    By Anchovyforestbane, October 19, 2020   

    • astrophysics
    • astrochemistry
    • 0 replies
    • 471 views
    • 
    • Anchovyforestbane
    • October 19, 2020

21. Starlight Where Are You

    By malform11, August 25, 2020
    • 4 replies
    • 1.1k views
    • 
    • spartan45
    • October 19, 2020

22. Gallium/Mercury Planet

    By Anchovyforestbane, October 19, 2020   

    • astrobiology
    • organometallic chemistry
    • 0 replies
    • 467 views
    • 
    • Anchovyforestbane
    • October 19, 2020

23. Hypothetical "Spaceless" Universe

    By Anchovyforestbane, October 17, 2020   

    • astrophysics
    • astrobiology
    • 0 replies
    • 455 views
    • 
    • Anchovyforestbane
    • October 17, 2020

24. What it takes to move the moon.

    By DoesntMatter, September 30, 2020
    • 3 replies
    • 1k views
    • 
    • montgomery
    • October 10, 2020

25. Big Bang. 1 2

    By Orion, July 20, 2020
    • 27 replies
    • 2.2k views
    • 
    • Thoth101
    • September 7, 2020