Astronomy and Space

1,487 topics in this forum

1. Types of propulsion system for spacecrafts

   By bearnard55, March 18, 2021
   • 2 replies
   • 858 views
   • 
   • bearnard55
   • March 19, 2021

2. Space hotel

   By bearnard55, March 4, 2021
   • 3 replies
   • 1.1k views
   • 
   • bearnard55
   • March 15, 2021

3. Message from Rhythmic Exoplanets points to God 1 2 3

   By SirHope, January 29, 2021
   • 49 replies
   • 8.6k views
   • 
   • Vmedvil2
   • February 16, 2021

4. Space junk

   By bearnard55, February 12, 2021
   • 0 replies
   • 750 views
   • 
   • bearnard55
   • February 12, 2021

5. crewed or uncrewed space missions

   By bearnard55, February 8, 2021
   • 2 replies
   • 944 views
   • 
   • bearnard55
   • February 11, 2021

6. Can such space technology make preservation of the environment on Earth

   By bearnard55, February 10, 2021
   • 0 replies
   • 826 views
   • 
   • bearnard55
   • February 10, 2021

7. The Sun`s exploration

   By bearnard55, February 4, 2021
   • 0 replies
   • 690 views
   • 
   • bearnard55
   • February 4, 2021

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

   By bearnard55, January 16, 2021
   • 2 replies
   • 942 views
   • 
   • bearnard55
   • February 1, 2021

9. Trade Agreements Between Humans and UFOs

   By Vmedvil2, January 30, 2021
   • 0 replies
   • 733 views
   • 
   • Vmedvil2
   • January 30, 2021

10. Technology can be used to measure the extent of desertification

    By bearnard55, January 27, 2021
    • 1 reply
    • 876 views
    • 
    • write4u
    • January 27, 2021

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

    By Af82l8, January 22, 2021   

    • 2021
    • january
    • (and 3 more)

      Tagged with:

      • 2021
      • january
      • astronomy
      • star brightens
      • star anomily
    • 2 replies
    • 1.1k views
    • 
    • Af82l8
    • January 22, 2021

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

    By alfa015, March 1, 2019
    • 30 replies
    • 3.7k views
    • 
    • bearnard55
    • January 6, 2021

13. The problem of crushing Starship

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

14. 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
    • 993 views
    • 
    • LaurieAG
    • January 4, 2021

15. The water on Mars

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

16. The most advanced space tech

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

17. Microsatellites

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

18. The journey to the red planet

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

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

    By Anchovyforestbane, September 22, 2020
    • 82 replies
    • 7.8k views
    • 
    • Anchovyforestbane
    • November 22, 2020

20. Capture Image Of Black Hole

    By hazelm, April 10, 2019
    • 3 replies
    • 1.7k views
    • 
    • amateurastronomer
    • November 5, 2020

21. Argon Thought Experiment

    By Anchovyforestbane, November 2, 2020   

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

22. The First Object Launched Into Space

    By Vmedvil2, June 21, 2019
    • 2 replies
    • 1.7k views
    • 
    • Josmellon
    • October 30, 2020

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

    By hallenrm, February 20, 2006
    • 76 replies
    • 35.6k views
    • 
    • Josmellon
    • October 30, 2020

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

    By alfa015, April 9, 2020
    • 1 reply
    • 1.2k views
    • 
    • Josmellon
    • October 30, 2020

25. Black Holes Are Like A Hologram

    By Thoth101, June 14, 2020
    • 2 replies
    • 1.3k views
    • 
    • Josmellon
    • October 30, 2020