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Submission + - Tiny ion engine runs on water (discovery.com)

symbolset writes: Discovery News is covering a project by two engineers from the University of Michigan to pair cubesats with tiny ion engines for inexpensive interplanetary exploration. The tiny plasma drive called the CubeSat Ambipolar Thruster (CAT) will ionize water and use it as propellant with power provided by solar cells. In addition to scaling down the size of ion engines they hope to bring down the whole cost of development and launch to under $200,000.
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Tiny ion engine runs on water

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Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.

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