Science & Spaceflight

8,461 topics in this forum

1. The Realistic Challenges Of BIG Nuclear Powered Space Lasers

   By Spacescifi, November 24, 2020
   • 16 replies
   • 1.2k views
   • 
   • Nothalogh
   • November 27, 2020

2. Power grids. AC or DC in hindsight? (Split from Nikola Tesla)

   By AHHans, November 21, 2020
   • 13 replies
   • 842 views
   • 
   • Shpaget
   • November 24, 2020

3. Nuclear Photon Rockets: Flashlights to the Stars

   By MatterBeam, November 16, 2020   

   • interstellar
   • 4 replies
   • 2.2k views
   • 
   • MatterBeam
   • November 16, 2020

4. RD-600: Soviet gas-core bimodal nuclear thermal rocket (now published on Atomic Rockets)

   By DDE, November 1, 2016   

   • history
   • atomic rockets
   • (and 1 more)

      Tagged with:

     • history
     • atomic rockets
     • soviet union
   • 20 replies
   • 14.3k views
   • 
   • MatterBeam
   • November 16, 2020

5. Can the station go full SpaceX in the future?

   By Serenity, November 13, 2020
   • 19 replies
   • 1.7k views
   • 
   • kerbiloid
   • November 15, 2020

6. X-ray and Gamma ray mirrors... and Perfect Mirrors

   By Spacescifi, October 31, 2020
   • 6 replies
   • 1.6k views
   • 
   • lajoswinkler
   • November 15, 2020

7. Variations On A Theme Of Earth

   By Spacescifi, November 8, 2020
   • 20 replies
   • 951 views
   • 
   • sir rocket
   • November 15, 2020

8. Scifi Laser Rifles With A Dash Of Realism

   By Spacescifi, November 10, 2020
   • 14 replies
   • 1.1k views
   • 
   • kerbiloid
   • November 14, 2020

9. The Rocketry Implications Of Portal Assisted Rocketry

   By Spacescifi, November 1, 2020
   • 18 replies
   • 1.2k views
   • 
   • kerbiloid
   • November 9, 2020

10. Electrical (No Ion) Engine 1 2

    By Dr. Kerbal, October 25, 2020
    • 25 replies
    • 1.6k views
    • 
    • AHHans
    • November 7, 2020

11. Realistic space combat vehicles?

    By Pds314, October 30, 2020
    • 21 replies
    • 1.8k views
    • 
    • kerbiloid
    • November 5, 2020

12. Airbreathing SSTO Design 1 2

    By Spacescifi, November 1, 2020
    • 28 replies
    • 1.7k views
    • 
    • Spacescifi
    • November 4, 2020

13. Is Pluto a planet? 1 2 3 4 6

    By Entropian, October 12, 2020   

    • pluto
    • iau
    • 145 replies
    • 11k views
    • 
    • grungar3x7
    • November 3, 2020

14. Take That Fusion!

    By Spacescifi, October 27, 2020
    • 8 replies
    • 780 views
    • 
    • K^2
    • October 28, 2020

15. Trying to understand conservation of momentum [Split from another topic] 1 2 3

    By Arugela, October 21, 2020
    • 54 replies
    • 3.5k views
    • 
    • K^2
    • October 27, 2020

16. Exciting NASA announcement 1 2

    By Entropian, October 22, 2020
    • 31 replies
    • 2.3k views
    • 
    • lemon cup
    • October 27, 2020

17. Could we track approaching alien ships?

    By s_gamer101, October 18, 2020   

    • alien
    • aliens
    • (and 1 more)

       Tagged with:

      • alien
      • aliens
      • alien life
    • 15 replies
    • 1.5k views
    • 
    • 1of6Billion
    • October 26, 2020

18. Antimatter Engine 1 2

    By Dr. Kerbal, October 19, 2020
    • 42 replies
    • 3.8k views
    • 
    • K^2
    • October 26, 2020

19. How Scifi Repulsors That Actually Repelled Could Work

    By Spacescifi, October 23, 2020
    • 1 reply
    • 737 views
    • 
    • kerbiloid
    • October 23, 2020

20. Small Asteroid Mining (Geology, Economic and Ecological/Heritage) questions

    By JoeSchmuckatelli, October 19, 2020
    • 4 replies
    • 513 views
    • 
    • Spaceception
    • October 20, 2020

21. How Heavy is Reasonable In This Setting And What is TOO Heavy? 1 2

    By Spacescifi, October 11, 2020
    • 31 replies
    • 2.1k views
    • 
    • Spacescifi
    • October 19, 2020

22. Analytic drag equation for rocket under acceleration

    By Guest, October 11, 2020   

    • math
    • maths
    • (and 1 more)

       Tagged with:

      • math
      • maths
      • physics
    • 5 replies
    • 811 views
    • 
    • Guest
    • October 19, 2020

23. Room Temperature Superconductors

    By K^2, October 15, 2020
    • 13 replies
    • 1.2k views
    • 
    • K^2
    • October 19, 2020

24. How Much Delta V Is Necessary To Get Around The Solar System?

    By Spacescifi, October 18, 2020
    • 16 replies
    • 827 views
    • 
    • kerbiloid
    • October 19, 2020

25. Fart powered biological underwater propulsion

    By Spacescifi, October 15, 2020
    • 15 replies
    • 1.4k views
    • 
    • Spacescifi
    • October 17, 2020