Astronomy and Space

1,406 topics in this forum

1. What happened to Mars? 1 2 3 4

   By Anchovyforestbane, September 22
   • 59 replies
   • 968 views
   • 
   • Anchovyforestbane
   • 2 hours ago

2. #4 SIRIUS_ from Dr Steven Greer - Original Full-Length Documentary Film

   By Thoth101, Saturday at 07:43 AM
   • 8 replies
   • 92 views
   • 
   • montgomery
   • Yesterday at 05:10 PM

3. Planet go boom

   By Anchovyforestbane, October 19   

   • astrophysics
   • astrochemistry
   • 0 replies
   • 42 views
   • 
   • Anchovyforestbane
   • October 19

4. Starlight Where Are You

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

5. Gallium/Mercury Planet

   By Anchovyforestbane, October 19   

   • astrobiology
   • organometallic chemistry
   • 0 replies
   • 39 views
   • 
   • Anchovyforestbane
   • October 19

6. Hypothetical "Spaceless" Universe

   By Anchovyforestbane, October 17   

   • astrophysics
   • astrobiology
   • 0 replies
   • 63 views
   • 
   • Anchovyforestbane
   • October 17

7. Universal Perpetual Machine

   By petrushkagoogol, October 8
   • 4 replies
   • 129 views
   • 
   • petrushkagoogol
   • October 11

8. What it takes to move the moon.

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

9. Big Bang. 1 2

   By Orion, July 20
   • 27 replies
   • 656 views
   • 
   • Thoth101
   • September 7

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

    By spartan45, January 16, 2018
    • 10 replies
    • 4.8k views
    • 
    • spartan45
    • August 15

11. I Designed A Crewed Interstellar Spacecraft

    By alfa015, July 4
    • 5 replies
    • 307 views
    • 
    • Thoth101
    • August 11

12. Interview About New Proposed Interstellar Spacecraft

    By alfa015, August 7
    • 0 replies
    • 208 views
    • 
    • alfa015
    • August 7

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

    By geko, March 25, 2009
    • 56 replies
    • 85.4k views
    • 
    • JasonWP
    • July 29

14. Chasing Effect Between The Gravitational Field And The Object

    By TonyYuan2020, July 13   

    • gravitational field
    • 0 replies
    • 209 views
    • 
    • TonyYuan2020
    • July 13

15. Building A Supermassive Black Hole Dyson Sphere Continued 1 2

    By VictorMedvil, September 9, 2019
    • 32 replies
    • 1.9k views
    • 
    • VictorMedvil
    • July 4

16. "Star Wars" Program(S. D. I.)

    By VictorMedvil, July 2
    • 0 replies
    • 204 views
    • 
    • VictorMedvil
    • July 2

17. Isometric Expansion Of The Universe

    By petrushkagoogol, June 29
    • 0 replies
    • 97 views
    • 
    • petrushkagoogol
    • June 29

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

    By ScienceAndUniverse, June 21   

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

      Tagged with:

      • black hole
      • black hole explained
      • how do we know
    • 8 replies
    • 392 views
    • 
    • montgomery
    • June 26

19. How Can The Universe Expand Faster Than Light?

    By ScienceAndUniverse, June 20   

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

      Tagged with:

      • expansion of universe
      • faster than light
      • speed of light
    • 3 replies
    • 253 views
    • 
    • A-wal
    • June 21

20. There Are Aliens Out There! 1 2

    By VictorMedvil, May 21
    • 22 replies
    • 913 views
    • 
    • Thoth101
    • June 21

21. Dark Matter Explained - How Do We Know It Exists?

    By ScienceAndUniverse, June 20   

    • Dark Matter
    • Explained
    • (and 1 more)

      Tagged with:

      • Dark Matter
      • Explained
      • How do we know
    • 0 replies
    • 212 views
    • 
    • ScienceAndUniverse
    • June 20

22. What Kind Of Universe Is Suitable For Life?

    By ScienceAndUniverse, June 19
    • 0 replies
    • 194 views
    • 
    • ScienceAndUniverse
    • June 19

23. Black Holes Are Like A Hologram

    By Thoth101, June 14
    • 1 reply
    • 249 views
    • 
    • Thoth101
    • June 15

24. Dyson Sphere Construction Video

    By VictorMedvil, June 11
    • 1 reply
    • 236 views
    • 
    • Flummoxed
    • June 11

25. Netflix Secured 'space Force' Trademark Before U.s. Armed Forces

    By Thoth101, June 10
    • 0 replies
    • 223 views
    • 
    • Thoth101
    • June 10