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Lick Observatory on Mt. Hamilton. San Jose, California. Computer screen during Chris McCarthy's night long search for other planets. This shows the spectrum of a start (eschelle spectrum) from 61 Virginis. Spectral lines will move if the star has a planet?this is the motion that they are trying to detect. The sensitivity needs to read 1/1000 of a pixel. 120-inch telescope. Exoplanets & Planet Hunters

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©Peter Menzel, www.menzelphoto.com
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Astronomy
Lick Observatory on Mt. Hamilton. San Jose, California. Computer screen during Chris McCarthy's night long search for other planets. This shows the spectrum of a start (eschelle spectrum) from 61 Virginis. Spectral lines will move if the star has a planet?this is the motion that they are trying to detect. The sensitivity needs to read 1/1000 of a pixel. 120-inch telescope. Exoplanets & Planet Hunters
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