Astronomy and Space

1,417 topics in this forum

1. Near Earth Objects 1 2 3 4 14

   By Deepwater6, November 4, 2011
   • 236 replies
   • 39.1k views
   • 
   • LaurieAG
   • July 19, 2019

2. Transforming Mars

   By hazelm, July 16, 2019
   • 2 replies
   • 657 views
   • 
   • hazelm
   • July 16, 2019

3. Brooks Range Observatory Site?

   By SaxonViolence, May 24, 2019
   • 0 replies
   • 663 views
   • 
   • SaxonViolence
   • May 24, 2019

4. How Would Life Be Altered If Our Moon Had Its Own Moon?

   By andytak3740, April 20, 2019   

   • Moon
   • Orbit
   • (and 1 more)

     Tagged with:

     • Moon
     • Orbit
     • Satilite
   • 4 replies
   • 915 views
   • 
   • SaxonViolence
   • May 24, 2019

5. If Venus Was A Red Dwarf...

   By SaxonViolence, May 23, 2019
   • 0 replies
   • 556 views
   • 
   • SaxonViolence
   • May 23, 2019

6. Planets Surviving Without A Host Star? 1 2

   By hazelm, May 15, 2019
   • 17 replies
   • 1.3k views
   • 
   • GAHD
   • May 22, 2019

7. Arecibo

   By fahrquad, April 30, 2019
   • 3 replies
   • 1.7k views
   • 
   • fahrquad
   • May 1, 2019

8. 3 Facts Maybe You Don't Know About Antimatter

   By alfa015, April 13, 2019
   • 1 reply
   • 963 views
   • 
   • VictorMedvil
   • April 25, 2019

9. A Question About Low Magnification Wide-Angle Optics

   By SaxonViolence, April 10, 2019
   • 3 replies
   • 684 views
   • 
   • Moronium
   • April 10, 2019

10. A Gigantic Exoplanet? 1 2

    By hazelm, April 9, 2019
    • 17 replies
    • 1.2k views
    • 
    • Flummoxed
    • April 9, 2019

11. Let There Be Light

    By hazelm, April 1, 2019
    • 15 replies
    • 880 views
    • 
    • Flummoxed
    • April 8, 2019

12. What If The Meteor That Killed The Dinosaurs Shattered Before Impact? 1 2

    By andytak3740, April 7, 2019   

    • Dinosaurs
    • meteor
    • (and 2 more)

      Tagged with:

      • Dinosaurs
      • meteor
      • astroid
      • impact
    • 21 replies
    • 2k views
    • 
    • fahrquad
    • April 8, 2019

13. From Where Comes This Energy? 1 2

    By hazelm, March 21, 2019
    • 23 replies
    • 1.5k views
    • 
    • hazelm
    • March 22, 2019

14. Activities Of Bennu - And ...

    By hazelm, March 21, 2019
    • 3 replies
    • 601 views
    • 
    • hazelm
    • March 21, 2019

15. 4.22 Ly Stars

    By alright1234, March 20, 2019
    • 2 replies
    • 611 views
    • 
    • alright1234
    • March 20, 2019

16. Surprises From Venus And Mercury --

    By hazelm, March 13, 2019
    • 10 replies
    • 793 views
    • 
    • fahrquad
    • March 13, 2019

17. Antimatter Capture From Blackhole

    By VictorMedvil, February 14, 2019
    • 6 replies
    • 1.7k views
    • 
    • GAHD
    • March 5, 2019

18. A River Of Stars

    By hazelm, February 16, 2019
    • 4 replies
    • 728 views
    • 
    • hazelm
    • March 1, 2019

19. The Cosmic Conundrum

    By hazelm, February 16, 2019
    • 2 replies
    • 692 views
    • 
    • OceanBreeze
    • February 16, 2019

20. Tidal Tales

    By hazelm, February 16, 2019
    • 0 replies
    • 626 views
    • 
    • hazelm
    • February 16, 2019

21. Why Isn't Concrete Used On Space Stations Or Space Craft 1 2

    By andytak3740, January 24, 2019   

    • Space Station
    • Space Craft
    • (and 2 more)

      Tagged with:

      • Space Station
      • Space Craft
      • Materials
      • Construction
    • 21 replies
    • 1.7k views
    • 
    • GAHD
    • February 10, 2019

22. Is It Feasible To Create A Tower That Reaches Space?

    By andytak3740, January 31, 2019   

    • Space elevator
    • Transportation
    • (and 1 more)

      Tagged with:

      • Space elevator
      • Transportation
      • Buildings
    • 3 replies
    • 854 views
    • 
    • fahrquad
    • February 9, 2019

23. Do You Think Tau Ceti E Is Inhabited?

    By alfa015, February 9, 2019
    • 1 reply
    • 614 views
    • 
    • fahrquad
    • February 9, 2019

24. Exciting Magnetic Alfenic Waves

    By hazelm, February 8, 2019
    • 0 replies
    • 638 views
    • 
    • hazelm
    • February 8, 2019

25. Supermassive Supergiants Collapsed?

    By hazelm, January 25, 2019
    • 4 replies
    • 679 views
    • 
    • hazelm
    • January 26, 2019