Exoplanet observatories such as corot, launched by the French and European space agencies, and Kepler, built by nasa, have monitored thousands of stars in recent years with unprecedented precision.

由法国和欧洲航天局发射的 Corot 和美国宇航局建造的，开普勒等系外行星天文台近年来以前所未有的精度监测了数千颗恒星。