Astronomy and Space

1,469 topics in this forum

1. Sunburst Arc Doppelgangers?

   By hazelm, November 15, 2019
   • 0 replies
   • 674 views
   • 
   • hazelm
   • November 15, 2019

2. Irrelevancy Of Friction?

   By hazelm, October 23, 2019
   • 6 replies
   • 1.1k views
   • 
   • hazelm
   • October 25, 2019

3. The Distant Universe Is The Early Universe

   By hazelm, June 2, 2019
   • 7 replies
   • 1.3k views
   • 
   • Vmedvil2
   • October 9, 2019

4. Magnetic Field Line Rockets/jets

   By andytak3740, July 30, 2019   

   • Rockets
   • Space
   • (and 3 more)

     Tagged with:

     • Rockets
     • Space
     • Magnet
     • Field line
     • Jets
   • 3 replies
   • 1.5k views
   • 
   • andytak3740
   • August 8, 2019

5. The Habitable Exoplanet Hunting Project

   By alfa015, July 13, 2019
   • 1 reply
   • 956 views
   • 
   • alfa015
   • August 6, 2019

6. Near Earth Objects 1 2 3 4 14

   By Deepwater6, November 4, 2011
   • 236 replies
   • 45.5k views
   • 
   • LaurieAG
   • July 19, 2019

7. Transforming Mars

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

8. Brooks Range Observatory Site?

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

9. 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
   • 1.2k views
   • 
   • SaxonViolence
   • May 24, 2019

10. If Venus Was A Red Dwarf...

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

11. Planets Surviving Without A Host Star? 1 2

    By hazelm, May 15, 2019
    • 17 replies
    • 1.9k views
    • 
    • GAHD
    • May 22, 2019

12. Arecibo

    By fahrquad, April 30, 2019
    • 3 replies
    • 2.3k views
    • 
    • fahrquad
    • May 1, 2019

13. 3 Facts Maybe You Don't Know About Antimatter

    By alfa015, April 13, 2019
    • 1 reply
    • 1.3k views
    • 
    • Vmedvil2
    • April 25, 2019

14. A Question About Low Magnification Wide-Angle Optics

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

15. A Gigantic Exoplanet? 1 2

    By hazelm, April 9, 2019
    • 17 replies
    • 1.7k views
    • 
    • Flummoxed
    • April 9, 2019

16. Let There Be Light

    By hazelm, April 1, 2019
    • 15 replies
    • 1.3k views
    • 
    • Flummoxed
    • April 8, 2019

17. 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
    • 3.6k views
    • 
    • fahrquad
    • April 8, 2019

18. From Where Comes This Energy? 1 2

    By hazelm, March 21, 2019
    • 23 replies
    • 2.2k views
    • 
    • hazelm
    • March 22, 2019

19. Activities Of Bennu - And ...

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

20. 4.22 Ly Stars

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

21. Surprises From Venus And Mercury --

    By hazelm, March 13, 2019
    • 10 replies
    • 1.3k views
    • 
    • fahrquad
    • March 13, 2019

22. Antimatter Capture From Blackhole

    By Vmedvil2, February 14, 2019
    • 6 replies
    • 3k views
    • 
    • GAHD
    • March 5, 2019

23. A River Of Stars

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

24. The Cosmic Conundrum

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

25. Tidal Tales

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