So we will measure a smooth dip in the brightness of the star at regular intervals as the planet passes in front. (myscizzle.com)
The new telescope works by watching stars and looking for the tiny repeated dips in their brightness caused by a planet passing between the telescope and the star. (newsweek.com)
The tiny dip in brightness when a planet passes in front of one of these stars is called a transit. (eos-nexus.org)