an artist's impression of two planets in front of a star

Artist's View of Planets Transiting Red Dwarf Star in TRAPPIST-1 System Caption This illustration shows two Earth-sized worlds passing in front of their parent red dwarf star, which is much smaller and cooler than our sun. Credits Illustration: NASA, ESA, and G. Bacon (STScI); Science: NASA, ESA, and J. de Wit (MIT)