An artist’s rendering of the seven planets that orbit the star named Trappist-1, in order of their distance from the star.

EDITORIAL USE ONLY In an undated handout image, the seven planets that orbit the star named Trappist-1, in order of their distance from the star, compared to Earth’s solar system. Seven Earth-size planets that could potentially harbor life have been identified orbiting a tiny star not too far away, offering the first realistic opportunity to search for biological signs of alien life outside of the solar system. (JPL-Caltech/NASA via The New York Times) – EDITORIAL USE ONLY –