Science & Spaceflight

8,476 topics in this forum

1. Exotic planet idea.

   By Spaceception, April 22, 2017
   • 4 replies
   • 842 views
   • 
   • Zeiss Ikon
   • April 22, 2017

2. New atmospheric/space phenomenon?

   By p1t1o, April 21, 2017
   • 5 replies
   • 949 views
   • 
   • Mikki
   • April 22, 2017

3. Progade vs. Posigrade

   By Cadet_BNSF, April 20, 2017
   • 23 replies
   • 5.5k views
   • 
   • Ultimate Steve
   • April 21, 2017

4. Soyuz with crew launching today!

   By Ultimate Steve, April 20, 2017
   • 21 replies
   • 2.6k views
   • 
   • Guest
   • April 21, 2017

5. Life ! L.i.f.e ! LIFE !

   By Green Baron, April 21, 2017
   • 10 replies
   • 1k views
   • 
   • kerbiloid
   • April 21, 2017

6. Anti Proton - Non Proton reaction 1 2

   By FreeThinker, April 18, 2017   

   • antimatter
   • 25 replies
   • 2.7k views
   • 
   • FreeThinker
   • April 21, 2017

7. Calculating optimal ballistic trajectories

   By jofwu, March 28, 2017   

   • trajectories
   • orbits
   • (and 1 more)

      Tagged with:

     • trajectories
     • orbits
     • math
   • 17 replies
   • 4.5k views
   • 
   • surge
   • April 21, 2017

8. Delta V and the Oberth Effect

   By ALaz1, April 20, 2017
   • 7 replies
   • 1.6k views
   • 
   • sevenperforce
   • April 20, 2017

9. Negative Mass Created!

   By Gargamel, April 20, 2017
   • 2 replies
   • 659 views
   • 
   • Steel
   • April 20, 2017

10. Still want an SSTO? Your move. 1 2

    By sevenperforce, April 14, 2017   

    • propellant
    • ssto
    • (and 1 more)

       Tagged with:

      • propellant
      • ssto
      • airbreathing
    • 29 replies
    • 3.8k views
    • 
    • sevenperforce
    • April 19, 2017

11. Stupid Math Puzzle

    By sevenperforce, April 18, 2017
    • 2 replies
    • 710 views
    • 
    • Nikolai
    • April 18, 2017

12. PARADOX solving. 1 2 3 4 5

    By Orion Kerman, April 14, 2017   

    • paradoxes
    • 105 replies
    • 8.9k views
    • 
    • Human Person
    • April 18, 2017

13. Circular Runways 1 2 3

    By Green Baron, March 29, 2017
    • 58 replies
    • 6.3k views
    • 
    • p1t1o
    • April 18, 2017

14. Negative mass created in lab

    By insert_name, April 13, 2017
    • 6 replies
    • 1.2k views
    • 
    • p1t1o
    • April 18, 2017

15. Attempting to Get Around Added Sugars 1 2 3

    By Tex, April 13, 2017
    • 72 replies
    • 4.2k views
    • 
    • Nightside
    • April 18, 2017

16. Why does the Gemini have a flat nose cone and no escape tower 1 2

    By Abstract_Kerman, April 12, 2017
    • 43 replies
    • 6.3k views
    • 
    • Capt. Hunt
    • April 17, 2017

17. Talking to Voyager 2, or how the pros do comms

    By Rosco P. Coltrane, April 16, 2017
    • 2 replies
    • 873 views
    • 
    • Shpaget
    • April 17, 2017

18. Solar Probe Plus: NASA's hottest and fastest mission ever.

    By RainDreamer, April 12, 2017   

    • to the sun
    • going fast
    • (and 1 more)

       Tagged with:

      • to the sun
      • going fast
      • super hot
    • 14 replies
    • 2.3k views
    • 
    • wumpus
    • April 15, 2017

19. How many watts of energy would it take to vaporize an entire planet? 1 2

    By daniel l., April 12, 2017
    • 42 replies
    • 11.8k views
    • 
    • sevenperforce
    • April 14, 2017

20. NASA to make announcement regarding extraterrestrial oceans

    By insert_name, April 10, 2017
    • 24 replies
    • 2.1k views
    • 
    • Green Baron
    • April 14, 2017

21. New idea to transport resources railgun instead of rockets

    By IllyrianTheGreat, April 13, 2017
    • 13 replies
    • 1.3k views
    • 
    • IllyrianTheGreat
    • April 13, 2017

22. Gravity generation through the Alcubierre Drive?

    By G'th, March 30, 2017
    • 15 replies
    • 1.9k views
    • 
    • Akira_R
    • April 13, 2017

23. Engineering question, Re: aerospike engines.

    By sojourner, April 13, 2017
    • 7 replies
    • 3k views
    • 
    • tater
    • April 13, 2017

24. zipline tower escape system 1 2

    By mikegarrison, April 3, 2017
    • 47 replies
    • 4.6k views
    • 
    • DerekL1963
    • April 13, 2017

25. Aliens, Exist or Dont 1 2 3 4 6

    By StupidAndy, March 16, 2017   

    • aliens
    • 134 replies
    • 13.2k views
    • 
    • Kerbinchaser
    • April 12, 2017