Science & Spaceflight

8,479 topics in this forum

1. Sentient VS Likely Non-sentient eyes

   By Spacescifi, November 1, 2019
   • 12 replies
   • 1.1k views
   • 
   • Spacescifi
   • November 2, 2019

2. A Scifi Artificial Gravity Alternative....

   By Spacescifi, October 25, 2019
   • 17 replies
   • 1.2k views
   • 
   • Dirkidirk
   • November 1, 2019

3. Magnetic Rail Rocket Assist For Starship X

   By Spacescifi, October 27, 2019
   • 13 replies
   • 1.4k views
   • 
   • magnemoe
   • October 31, 2019

4. Superhuman Strength With Normal Weight.... Plausible or Pure Fantasy? 1 2

   By Spacescifi, October 24, 2019
   • 29 replies
   • 8.9k views
   • 
   • wumpus
   • October 30, 2019

5. The Tsiolkovsky Civilization Scale

   By Spacescifi, October 26, 2019
   • 24 replies
   • 1.7k views
   • 
   • kerbiloid
   • October 30, 2019

6. How useful would underground saltwater be?

   By farmerben, October 27, 2019
   • 10 replies
   • 790 views
   • 
   • farmerben
   • October 29, 2019

7. Blocky Spaceship Viability and Refueling Propellant On Earth-like Worlds 1 2

   By Spacescifi, October 17, 2019
   • 42 replies
   • 2.2k views
   • 
   • Guest
   • October 26, 2019

8. Helical Engine- RL Kraken drive or the next EM Drive?

   By DAL59, October 25, 2019
   • 3 replies
   • 644 views
   • 
   • Guest
   • October 25, 2019

9. How would human populations think in an environment with nonhuman populations?

   By Souper, October 25, 2019   

   • sociology
   • psychology
   • (and 1 more)

      Tagged with:

     • sociology
     • psychology
     • aliens
   • 8 replies
   • 704 views
   • 
   • farmerben
   • October 25, 2019

10. Limits Of Radiation Shielding

    By Spacescifi, October 21, 2019
    • 11 replies
    • 951 views
    • 
    • kerbiloid
    • October 24, 2019

11. Ares-I question...

    By Jestersage, October 20, 2019
    • 12 replies
    • 1k views
    • 
    • sevenperforce
    • October 21, 2019

12. Why a Star Trek replicator will never be possible 1 2 3

    By TheDataMiner, December 5, 2013
    • 73 replies
    • 16.9k views
    • 
    • Nuke
    • October 20, 2019

13. Living in Zero G

    By Robonoise, October 18, 2019
    • 9 replies
    • 842 views
    • 
    • Spacescifi
    • October 20, 2019

14. The portrayal of Scientists and scientific breakthroughs in sci-fi 1 2

    By Spaceception, October 17, 2019
    • 26 replies
    • 2.6k views
    • 
    • kerbiloid
    • October 19, 2019

15. Matter Transmutation Made Easy... What If?

    By Spacescifi, October 16, 2019
    • 10 replies
    • 735 views
    • 
    • kerbiloid
    • October 18, 2019

16. Delta Clipper and other single-stage missiles impossible? 1 2 3

    By OOM, October 15, 2019
    • 56 replies
    • 4.8k views
    • 
    • Terwin
    • October 17, 2019

17. Toughguy Gravity and zero g pregnancy

    By Spacescifi, October 15, 2019
    • 20 replies
    • 1.3k views
    • 
    • Spacescifi
    • October 17, 2019

18. Alternative Energy Thread

    By Thor Wotansen, October 16, 2019
    • 5 replies
    • 685 views
    • 
    • kerbiloid
    • October 17, 2019

19. Large starship crews vs small starship crews 1 2

    By Spacescifi, October 14, 2019
    • 33 replies
    • 3.4k views
    • 
    • KSK
    • October 16, 2019

20. Metallic Hydrogen As Radiation Shielding

    By Spacescifi, October 14, 2019
    • 4 replies
    • 817 views
    • 
    • Guest
    • October 14, 2019

21. Pure Newtonian Combat... Surprises 1 2 3

    By Spacescifi, October 5, 2019
    • 63 replies
    • 4.9k views
    • 
    • Guest
    • October 14, 2019

22. Is this really a 787's peak performance. And why don't they make it? 1 2

    By Arugela, October 10, 2019
    • 28 replies
    • 2.6k views
    • 
    • Guest
    • October 14, 2019

23. The Expanse's Epstein Drive: Explained 1 2

    By MatterBeam, October 5, 2019
    • 42 replies
    • 12.8k views
    • 
    • kerbiloid
    • October 14, 2019

24. Resource consumption on really tiny planets

    By ChrisSpace, November 9, 2015
    • 21 replies
    • 6.8k views
    • 
    • wumpus
    • October 14, 2019

25. Landing StarShip Horizontally 1 2

    By llertag86, October 6, 2019   

    • spacex
    • 32 replies
    • 3.3k views
    • 
    • magnemoe
    • October 13, 2019