Science & Spaceflight

8,461 topics in this forum

1. We made a planet in our minds.

   By Whirligig Girl, August 6, 2013
   • 13 replies
   • 2.4k views
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   • Whirligig Girl
   • August 21, 2013

2. Removing a Fly Wheel on a Yard Machine Snow Blower

   By Diche Bach, August 20, 2013
   • 3 replies
   • 1.6k views
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   • Diche Bach
   • August 20, 2013

3. But... sputnik can't have been the first man made object in orbit! 1 2

   By Mulbin, August 15, 2013
   • 27 replies
   • 5.7k views
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   • Mulbin
   • August 20, 2013

4. Ascending nodes and LKO

   By Spyritdragon, August 20, 2013
   • 1 reply
   • 1.5k views
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   • Fuzzy Dunlop
   • August 20, 2013

5. Light bending space

   By Winter Man, August 19, 2013
   • 4 replies
   • 1.1k views
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   • Fuzzy Dunlop
   • August 20, 2013

6. The USS Pennsylvania: What A Manned Interplanetary Mission Might Look Like

   By The Jedi Master, August 17, 2013
   • 11 replies
   • 4.6k views
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   • Jackissimus
   • August 20, 2013

7. Why are the four gas giants not all the same size?

   By nhnifong, August 19, 2013
   • 7 replies
   • 1.6k views
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   • Stochasty
   • August 19, 2013

8. Optimal drag is g dependent?

   By Superluminaut, July 31, 2013
   • 10 replies
   • 3.3k views
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   • Superluminaut
   • August 19, 2013

9. Why are solid rockets considered unsafe? 1 2

   By Stinkk, August 13, 2013
   • 40 replies
   • 11.5k views
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   • magnemoe
   • August 19, 2013

10. How Far is the Real Moon's SOI?

    By Mr Shifty, August 19, 2013
    • 10 replies
    • 6.9k views
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    • Platofan2
    • August 19, 2013

11. Battery powered thermal rockets, where are they?

    By nhnifong, August 17, 2013
    • 11 replies
    • 2.7k views
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    • Thaniel
    • August 18, 2013

12. Planet Terrain Generation

    By MoonHeadJohn, August 13, 2013
    • 8 replies
    • 2.2k views
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    • SolarLiner
    • August 17, 2013

13. Economics of spaceflight 1 2

    By rpayne88, August 14, 2013
    • 27 replies
    • 3.9k views
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    • Nuke
    • August 17, 2013

14. If Apollo-Saturn was a beginning. 1 2 3

    By Drunkrobot, August 12, 2013
    • 67 replies
    • 12.6k views
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    • sojourner
    • August 17, 2013

15. Actual Time Travel Discovered!

    By AncientAstronaut, August 17, 2013
    • 7 replies
    • 3.5k views
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    • Ted
    • August 17, 2013

16. A new nova was discovered yesterday and is still getting brighter.

    By Gus, August 16, 2013
    • 12 replies
    • 2.2k views
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    • Brotoro
    • August 17, 2013

17. Crazy plants

    By drakesdoom, August 16, 2013
    • 3 replies
    • 1.7k views
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    • Bobhendly
    • August 17, 2013

18. Go Grasshopper! :D

    By bigdad84, August 14, 2013
    • 17 replies
    • 3.2k views
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    • nhnifong
    • August 16, 2013

19. Rocket to the Future

    By Pawelk198604, August 16, 2013
    • 0 replies
    • 845 views
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    • Pawelk198604
    • August 16, 2013

20. VASIMR to Mars

    By czokletmuss, August 15, 2013
    • 3 replies
    • 1.6k views
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    • Thaniel
    • August 16, 2013

21. Real Life atmospheric limit

    By PTNLemay, August 16, 2013
    • 3 replies
    • 1.4k views
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    • DerekL1963
    • August 16, 2013

22. Planet-Hunting Days of NASA's Kepler Spacecraft Likely Over

    By Gus, August 16, 2013
    • 0 replies
    • 581 views
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    • Gus
    • August 16, 2013

23. Solar Power Satellites 1 2 3

    By NGTOne, August 13, 2013
    • 53 replies
    • 8.2k views
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    • NGTOne
    • August 15, 2013

24. SpaceX Grasshopper does a hop.

    By Galane, August 15, 2013
    • 7 replies
    • 1.7k views
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    • Apotheosist
    • August 15, 2013

25. SpaceX... Y U NO USE BETTER PROPELLANTS!?

    By Naten, August 12, 2013
    • 17 replies
    • 4.2k views
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    • Apotheosist
    • August 15, 2013