A spectrometer developed by Arizona State University will fly onboard a NASA mission to Jupiter’s Trojan asteroids. The Thermal Emission Spectrometer for the Lucy mission will be a close copy of the OSIRIS-REx Thermal Emission Spectrometer, seen here under construction in the cleanroom on the Tempe campus. Its task in the Lucy mission will be to measure surface temperatures of primitive asteroids as a way of determining their physical properties. Courtesy of Philip Christensen/ASU. The Lucy mission has been chosen under the agency's Discovery Program, a series of cost-capped...Read full articleRelated content from Photonics MediaARTICLESRIT Professor to Develop Diffractive Solar SailsA new approach to solar sail design using diffractive optics could enable spacecraft to photograph the poles of the sun for the first time. 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