Astronomy and Space

1,417 topics in this forum

1. Star brightening, then dimming over the course of about a minute

   By Af82l8, Friday at 12:36 AM   

   • 2021
   • january
   • (and 3 more)

     Tagged with:

     • 2021
     • january
     • astronomy
     • star brightens
     • star anomily
   • 2 replies
   • 151 views
   • 
   • Af82l8
   • Friday at 11:12 AM

2. The most advanced private space company of the present time

   By bearnard55, January 16
   • 0 replies
   • 121 views
   • 
   • bearnard55
   • January 16

3. I just seen a star disappear? 1 2 3 4

   By geko, March 25, 2009
   • 58 replies
   • 87.3k views
   • 
   • Nebs357
   • January 14

4. The most advanced space craft of the recent time

   By bearnard55, January 6
   • 0 replies
   • 113 views
   • 
   • bearnard55
   • January 6

5. Do You Think We Are Alone In The Milky Way? 1 2

   By alfa015, March 1, 2019
   • 31 replies
   • 1.7k views
   • 
   • bearnard55
   • January 6

6. The problem of crushing Starship

   By bearnard55, January 5
   • 0 replies
   • 67 views
   • 
   • bearnard55
   • January 5

7. 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
   • 88 views
   • 
   • LaurieAG
   • January 4

8. The water on Mars

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

9. The most advanced space tech

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

10. Microsatellites

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

11. The journey to the red planet

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

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

    By spartan45, January 16, 2018
    • 12 replies
    • 5.4k views
    • 
    • spartan45
    • December 23, 2020

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

    By Anchovyforestbane, September 22, 2020
    • 82 replies
    • 3k views
    • 
    • Anchovyforestbane
    • November 22, 2020

14. Capture Image Of Black Hole

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

15. Argon Thought Experiment

    By Anchovyforestbane, November 2, 2020   

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

16. The First Object Launched Into Space

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

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

    By hallenrm, February 20, 2006
    • 76 replies
    • 10.8k views
    • 
    • Josmellon
    • October 30, 2020

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

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

19. Black Holes Are Like A Hologram

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

20. What Kind Of Universe Is Suitable For Life?

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

21. 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
    • 392 views
    • 
    • Josmellon
    • October 30, 2020

22. 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
    • 524 views
    • 
    • Josmellon
    • October 30, 2020

23. Universal Perpetual Machine

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

24. Interesting facts you should know before you die

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

25. #4 SIRIUS_ from Dr Steven Greer - Original Full-Length Documentary Film

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