Laser-Powered Lightsails for interstellar travel
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Lightsails could reach distant star systems

77% Informative
Breakthrough Starshot Initiative aims to use lasers to propel miniature space probes attached to "lightsails" to reach ultrafast speeds and eventually our nearest star system, Alpha Centauri .
Caltech has developed a platform for characterizing the ultrathin membranes that could one day be used to make these lightsails.
Researchers used nanoscience and metamaterials to control the side-to-side motion and rotation of a miniature lightsail.
They measured motions of the sail as small as picometers (trillionths of a meter ) as well as its mechanical stiffness.
They accounted for the laser beam spreading out at an angle and missing the sample by calibrating their results to the laser power.
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