This picture shows the spectrum of light . You may have seen similar images in the yesteryear , but this one is something special — because it ’s made of star light .
In April 2015 , two so - calledlaser relative frequency combswere installed at the High Accuracy Radial velocity Planet Searcher ( HARPS ) planet - find instrument of the European Southern Observatory ’s 3.6 - time scope at the La Silla Observatory in Chile . ESO explainswhat these devices and the spectra they produce are honorable for :
A laser oftenness comb can be used as a rule with which spectrum from astronomical objects can be evaluate with unprecedented precision . They will allow the lilliputian changes in leading velocity stimulate by an Earth - like planet as it orbit a asterisk to be detected . [ … ] The gain in truth made possible by this unexampled installation should in next allow dwell to be able-bodied to detect Earth - bulk planet in Earth - like area around other stars for the first time .
[ ESO ]
AstronomySpace
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