GREEN ROCKET FUEL NASA says that they have successfully tested a new, environmentally-friendly rocket fuel.The fuel is based on paraffin, a substance similar to what is used in common candles. According to NASA, it's non-toxic and easily handled. Its by-products are carbon dioxide and water. Conventional rocket fuel, on the other hand, produces aluminum oxide and acidic gasses, such as hydrogen chloride.There's no word from NASA on when the paraffin fuel might be used in a live mission.

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