Artist's impression - the seven planets of TRAPPIST-1 (ESO)
{"Image ImageDescription": "This artist\u2019s impression compares the seven planets orbiting the ultra-cool red dwarf star TRAPPIST-1 to the Earth at the same scale. 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. They are shown to the same scale but not in the correct relative positions."}