Astronomy and Space

1,435 topics in this forum

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

   By jamesfairclear, January 3   

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

     Tagged with:

     • time dilation
     • special relativity
     • quantum theory
   • 1 reply
   • 205 views
   • 
   • LaurieAG
   • January 4

2. The water on Mars

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

3. The most advanced space tech

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

4. Microsatellites

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

5. The journey to the red planet

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

6. At What Altitude Can Stars Be Seen In Daylight?

   By spartan45, January 16, 2018
   • 12 replies
   • 5.7k views
   • 
   • spartan45
   • December 23, 2020

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

   By Anchovyforestbane, September 22, 2020
   • 82 replies
   • 3.4k views
   • 
   • Anchovyforestbane
   • November 22, 2020

8. Capture Image Of Black Hole

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

9. Argon Thought Experiment

   By Anchovyforestbane, November 2, 2020   

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

10. The First Object Launched Into Space

    By VictorMedvil, June 21, 2019
    • 2 replies
    • 938 views
    • 
    • Josmellon
    • October 30, 2020

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

    By hallenrm, February 20, 2006
    • 76 replies
    • 11.1k views
    • 
    • Josmellon
    • October 30, 2020

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

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

13. Black Holes Are Like A Hologram

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

14. What Kind Of Universe Is Suitable For Life?

    By ScienceAndUniverse, June 19, 2020
    • 1 reply
    • 360 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
    • 475 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
    • 615 views
    • 
    • Josmellon
    • October 30, 2020

17. Universal Perpetual Machine

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

18. Interesting facts you should know before you die

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

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

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

20. Planet go boom

    By Anchovyforestbane, October 19, 2020   

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

21. Starlight Where Are You

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

22. Gallium/Mercury Planet

    By Anchovyforestbane, October 19, 2020   

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

23. Hypothetical "Spaceless" Universe

    By Anchovyforestbane, October 17, 2020   

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

24. What it takes to move the moon.

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

25. Big Bang. 1 2

    By Orion, July 20, 2020
    • 27 replies
    • 1k views
    • 
    • Thoth101
    • September 7, 2020