That Starry Night Sky? It’s Full of Eclipses

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And astronomers can, in a sense, “see” eclipses among other systems of planets orbiting their parent stars. In this case, the eclipse is a tiny drop in starlight as a planet, from our point of view, crosses the face of its star. That crossing, called a transit, can register on sensitive light sensors attached to telescopes on Earth and those in space, such as NASA’s Hubble Space Telescope, James Webb Space Telescope, or TESS (the Transiting Exoplanet Survey Satellite). It’s how the bulk of the more than 5,500 confirmed exoplanets – planets around other stars – have been detected so far, although other methods also are used to detect exoplanets.

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