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Celestial Album
BrightnessMicrolensing
11/18/09

 

This figure illustrates how the brightness of a background star changes during a microlensing event. In this case, an Earth-like planet is orbiting at 2 AU around a sun-like star (or equivalently orbiting closer to a smaller star). The planet signal—which is the little blip magnified in the inset—would be detectable with Euclid.
Credit: Arnaud Cassan, IAP



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