Recent content by petecarter

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    Can the EmDrive actually work for space travel?

    Newton's Third Law is inviolate, it's another way of saying momentum (both linear and angular) is always and everywhere conserved, no exceptions. This follows from Noether's Theorem, which says that every symmetry in nature leads to a conservation Law. The symmetry that any behavior of nature is...
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    An astronomer calculated that Earth's intelligent life is probably 'rare.' Here's what that means.

    One critical factor that wasn't mentioned in the article is life form morphology and environment. There is substantial evidence that dolphins may have mental capabilities similar to humans, but they obviously lack functional abilities similar to humans. And it's functional abilities that allow...