無重力的火焰

在地球上火焰多呈紅色錐形，但在太空船中無重力、無空氣對流的環境之下，火焰呈藍色球形。

http://209.85.175.104/search?q=cache:-hUmlaIJXCcJ:www.defence.org.cn/aspnet/vip-usa/uploadfiles/2006-10/20061024205919166.doc+%E7%84%A1%E9%87%8D%E5%8A%9B%E7%9A%84%E7%81%AB%E7%84%B0&hl=zh-TW&ct=clnk&cd=2&gl=hk

http://www.defence.org.cn/aspnet/vip-usa/uploadfiles/2006-10/20061024205919166.doc

Do you mean flame in no gravity?

You can go to NASA homepage to take a look of flame in space(ship), without the pull of gravitation, the flame is blue in color in sphere. This is because without gravity, there will be no convection, the hot air will not go up but in all direction, the flame burn in the most effective way.

太空不會有火焰,火焰需要有燃料,空氣,溫度這個火三角才能出現火,太空中沒有空氣,又那來的火?所以在太空中不會有火