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'Astrocomb' provides precision for planet-hunting telescope

from NIST via R&D

The hunt for Earth-like planets, and perhaps extraterrestrial life, just got more precise, thanks to record-setting starlight measurements made possible by a National Institute of Standards and Technology (NIST) “astrocomb.” NIST’s custom-made frequency comb—which precisely measures frequencies, or colors, of light—ensures the precision of starlight analysis by an instrument called a spectrograph at the Hobby-Eberly Telescope in Texas. more

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