Tag: first evidence of exoplanets

The pull-out box shows the strong lines of the element calcium, which are surprisingly easy to see in the century old spectrum. The spectrum is the thin, (mostly) dark line in the center of the image. The broad dark lanes above and below are from lamps u

First Exoplanet Apparently Discovered from 1917 Astronomical Glass Plate

Apr 15, 2016 06:30 AM EDT

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