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Lasers Used to ’Hear’ Ripples in Space

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PASADENA, Calif., Nov. 30, 2010 — A new system of lasers is being tested by NASA's Jet Propulsion Laboratory (JPL) that would “hear” gravitational waves, or ripples in space and time, while flying aboard the proposed space mission called Laser Interferometer Space Antenna (LISA). The research team, consisting of JPL scientists and engineers, is looking to detect the subtle, whisper-like signals of gravitational waves that were predicted by Albert Einstein in the 20th century, but have yet to be observed. The new JPL tests hit one significant milestone — demonstrating for the first time that...Read full article

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    Published: November 2010
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    gravitational waves
    Postulated by Einstein in his theory of relativity. They are waves traveling at the speed of light and exerting force on matter in their path. They are produced by changes in the distribution of matter.
    1993 Nobel Prize in PhysicsAlbert EinsteinAmericasastronomyBasic ScienceBill Klipsteinblack holesBrent WareCaliforniaCaltechconnecting laser beamscosmic wavesDaniel A. Shaddockdead starsEupopean Space AgencyEuropeGlenn de VineGoddard Space Flight Centergravitational wavesinterferometersJPLKirk McKenzielaser beamsLaser Interferometer Space AntennaMarylandMilky Way galxyNASApulsarsResearch & Technologyripples in spaceRobert E. SperoSensors & DetectorsTest & MeasurementTom Princetriangle space craftUS National Research CouncilLasers

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