NASA engineers say they know how to fix the broken Hubble Space Telescope: They have to wake up computer parts that have been sleeping in space for more than 18 years. On Wednesday, NASA will start a complicated remote-control fix of a major glitch that stopped the telescope from capturing and beaming down pictures. Hubble should be able to send stunning astronomy photos back to Earth by Friday, officials said. The abrupt failure more than two weeks ago caused NASA to postpone its Hubble upgrade mission from October to sometime next February or so.

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