Science & Spaceflight

8,460 topics in this forum

1. Spiderweb Gun

   By Spacescifi, March 11, 2022
   • 5 replies
   • 676 views
   • 
   • kerbiloid
   • March 11, 2022

2. Kessler Dome ABM Satellites 1 2

   By sevenperforce, March 3, 2022
   • 27 replies
   • 2.4k views
   • 
   • Terwin
   • March 11, 2022

3. Endurance found

   By Gargamel, March 9, 2022
   • 12 replies
   • 1.4k views
   • 
   • Gargamel
   • March 10, 2022

4. Is this Venus or a star?

   By Nerbal The Second, March 5, 2022
   • 11 replies
   • 927 views
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   • kerbiloid
   • March 6, 2022

5. What will the first space wars be like? 1 2

   By awsumguy76801, February 24, 2022
   • 31 replies
   • 2.2k views
   • 
   • Abel Military Services
   • March 5, 2022

6. if A Humanoid Was Powered By Nuclear Reactions

   By Spacescifi, February 27, 2022
   • 12 replies
   • 1k views
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   • Beamer
   • March 5, 2022

7. Plasma Railguns.... Any Good Use?

   By Spacescifi, March 1, 2022
   • 13 replies
   • 2.8k views
   • 
   • Spacescifi
   • March 5, 2022

8. What if chernobyl were to explode?

   By Arugela, February 26, 2022
   • 20 replies
   • 1.7k views
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   • Starhawk
   • March 4, 2022

9. IPCC 6th report

   By mikegarrison, August 9, 2021
   • 22 replies
   • 1.6k views
   • 
   • mikegarrison
   • March 2, 2022

10. Scifi Economies and Money

    By Spacescifi, February 26, 2022
    • 15 replies
    • 1k views
    • 
    • magnemoe
    • February 28, 2022

11. Gas giants with athmspheres breathable to us humans.

    By Maria Sirona, February 26, 2022
    • 6 replies
    • 781 views
    • 
    • jimmymcgoochie
    • February 26, 2022

12. Matrix planet.

    By awsumguy76801, February 20, 2022
    • 20 replies
    • 1.6k views
    • 
    • kerbiloid
    • February 26, 2022

13. Coldest natural temperature in the universe?

    By Elthy, February 21, 2022
    • 20 replies
    • 1.6k views
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    • K^2
    • February 24, 2022

14. Long Range Scifi Space Combat 1 2

    By Spacescifi, February 16, 2022
    • 41 replies
    • 2.9k views
    • 
    • Rakaydos
    • February 23, 2022

15. New planet discovered in proxima centuri system

    By insert_name, February 11, 2022
    • 11 replies
    • 1.1k views
    • 
    • Spaceception
    • February 23, 2022

16. I see plenty of 'moon simulators' but what of the walk?

    By boriz, February 19, 2022
    • 6 replies
    • 618 views
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    • Nuke
    • February 23, 2022

17. Space travel without combustion or nuclear power. (Thought experiment/discussion.) 1 2

    By Hyperspace Industries, December 24, 2021
    • 35 replies
    • 2k views
    • 
    • Hyperspace Industries
    • February 18, 2022

18. Three legs or four? 1 2

    By boriz, February 11, 2022
    • 27 replies
    • 2.2k views
    • 
    • kerbiloid
    • February 16, 2022

19. Liquid Rhenium Solar Thermal Rocket

    By MatterBeam, October 23, 2017   

    • space
    • solar thermal
    • (and 1 more)

       Tagged with:

      • space
      • solar thermal
      • rocket
    • 19 replies
    • 3.4k views
    • 
    • MatterBeam
    • February 16, 2022

20. Highest Oribtal Altitude

    By Minmus Taster, February 14, 2022   

    • spacex
    • 24 replies
    • 1.1k views
    • 
    • benzman
    • February 15, 2022

21. Solar Power Satellites (split from SpaceX) 1 2 3 4

    By SpaceFace545, June 3, 2021   

    • spacex
    • 92 replies
    • 5.5k views
    • 
    • tater
    • February 15, 2022

22. If Knowledge Is Power Then Could This Cause Science Breakthroughs? 1 2

    By Spacescifi, February 13, 2022
    • 37 replies
    • 2.3k views
    • 
    • JoeSchmuckatelli
    • February 15, 2022

23. What Would Sensors On Scifi SSTO's Even Look Like? 1 2

    By Spacescifi, February 8, 2022
    • 26 replies
    • 1.5k views
    • 
    • kerbiloid
    • February 11, 2022

24. Make your car melt snow?

    By Arugela, February 3, 2022
    • 18 replies
    • 1.5k views
    • 
    • Johnmo89
    • February 10, 2022

25. diamonds as a fuel?

    By Arugela, February 5, 2022
    • 12 replies
    • 1.1k views
    • 
    • Johnmo89
    • February 10, 2022