Science & Spaceflight

8,477 topics in this forum

1. Solar sail propulsion

   By PB666, April 26, 2016   

   • solar sail
   • interplanetary travel
   • 3 replies
   • 1.4k views
   • 
   • James Kerman
   • April 28, 2016

2. Massive black hole found

   By Atlas2342, April 27, 2016
   • 9 replies
   • 1.2k views
   • 
   • UmbralRaptor
   • April 28, 2016

3. Optimal shared-engine TSTO configuration

   By sevenperforce, April 26, 2016   

   • spacex
   • staging
   • 6 replies
   • 1.1k views
   • 
   • wumpus
   • April 27, 2016

4. Biofuel

   By JebKeb, April 13, 2016
   • 16 replies
   • 1.8k views
   • 
   • JebKeb
   • April 27, 2016

5. If a Moon or planet had life, what should we do? 1 2

   By Spaceception, April 25, 2016
   • 33 replies
   • 3.8k views
   • 
   • gooddog15
   • April 27, 2016

6. WEBCAM: Shuttle Tank ET94 passing through Panama Canal Pacific Lock Now

   By The Yellow Dart, April 26, 2016   

   • space
   • shuttle
   • (and 1 more)

      Tagged with:

     • space
     • shuttle
     • tank
   • 5 replies
   • 1.6k views
   • 
   • The Yellow Dart
   • April 26, 2016

7. Terraforming Mars 1 2 3 4 5

   By LostElement, February 19, 2014
   • 117 replies
   • 14.6k views
   • 
   • PB666
   • April 26, 2016

8. Apollo 17 in Real-time is up for a Webby - please vote

   By bfeist, April 18, 2016   

   • apollo
   • 2 replies
   • 821 views
   • 
   • hypervelocity
   • April 26, 2016

9. Quantum Supercomputer

   By KAL 9000, April 20, 2016
   • 15 replies
   • 1.7k views
   • 
   • justidutch
   • April 26, 2016

10. Is reality a simulation? 1 2

    By PB666, April 25, 2016   

    • quantum interactions
    • 29 replies
    • 4k views
    • 
    • kerbiloid
    • April 26, 2016

11. Make anything, with programmable matter 1 2

    By Spaceception, April 22, 2016
    • 26 replies
    • 2.6k views
    • 
    • HebaruSan
    • April 26, 2016

12. Hypersonic suborbital transport market as SSTO enabler 1 2

    By sevenperforce, April 22, 2016   

    • market
    • ssto
    • (and 1 more)

       Tagged with:

      • market
      • ssto
      • reuse
    • 33 replies
    • 3.4k views
    • 
    • sevenperforce
    • April 25, 2016

13. Generation Ship

    By GussieFinknottle, April 24, 2016
    • 12 replies
    • 1.4k views
    • 
    • shynung
    • April 25, 2016

14. How many people can the Earth hold?

    By Spaceception, April 25, 2016
    • 9 replies
    • 1.2k views
    • 
    • Snark
    • April 25, 2016

15. Anyone here launch a weather balloon?

    By FishInferno, April 24, 2016   

    • weather balloon
    • 11 replies
    • 2.1k views
    • 
    • Bill Phil
    • April 25, 2016

16. Faster than a speeding marathon

    By PB666, April 24, 2016   

    • iss
    • 3 replies
    • 767 views
    • 
    • PB666
    • April 25, 2016

17. Most higher energy cosmic rays come from distinct points within our local galaxy

    By PB666, April 23, 2016   

    • cosmic radiation
    • space risks
    • 3 replies
    • 632 views
    • 
    • YNM
    • April 25, 2016

18. Storable propellants for nuclear engine? 1 2 3

    By xenomorph555, December 17, 2014
    • 74 replies
    • 10.4k views
    • 
    • Thomassino
    • April 24, 2016

19. Planet 9 composition 1 2

    By PB666, April 10, 2016   

    • theoretical astrophysics
    • 25 replies
    • 3k views
    • 
    • PB666
    • April 24, 2016

20. The poles of venus

    By PB666, April 23, 2016
    • 3 replies
    • 1.1k views
    • 
    • AngelLestat
    • April 23, 2016

21. The battery that can last a lifetime

    By Spaceception, April 22, 2016
    • 11 replies
    • 1.6k views
    • 
    • Nuke
    • April 23, 2016

22. What can you do with galaxy sized computers? 1 2 3

    By RainDreamer, April 22, 2016   

    • computer
    • sci-fi
    • 55 replies
    • 4.8k views
    • 
    • Nuke
    • April 23, 2016

23. LFTR

    By Nich, April 10, 2016
    • 22 replies
    • 3.4k views
    • 
    • Gallopingcamel
    • April 23, 2016

24. Cosmic web

    By Darnok, April 22, 2016
    • 3 replies
    • 597 views
    • 
    • cubinator
    • April 22, 2016

25. Justify it

    By Kertech, April 22, 2016
    • 24 replies
    • 1.7k views
    • 
    • Frybert
    • April 22, 2016