images

Artist’s impression of the TRAPPIST-1 planetary system

by

ESO/Novapix

Reference

a-exo99-33308

Date

2018-02-06

This artist’s impression shows several of the planets orbiting the ultra-cool red dwarf star TRAPPIST-1. New observations, when combined with very sophisticated analysis, have now yielded good estimates of the densities of all seven of the Earth-sized planets and suggest that they are rich in volatile materials, probably water.