Seven planets orbiting the ultracool dwarf star TRAPPIST-1
Date: 31 August 2017
Satellite: Hubble Space Telescope
Copyright: NASA
This is an artist's impression of the TRAPPIST-1 system, showcasing all seven planets in various phases. When a planet transits across the disk of the red dwarf host star, as two of the planets here are shown to do, it creates a dip in the star's light that can be detected from Earth.
Also during such transits astronomers are able to study the potential atmospheres of these planets.
Last Update: 1 September 2019
