Astronomy Two Planets In Trappist-1 System Of Seven Earth-Size Worlds Might Be Habitable – New Study MessageToEagle.com | January 24, 2018 MessageToEagle.com – One of the most intriguing planetary systems discovered to date is TRAPPIST-1, a system of seven Earth-size worlds orbiting an ultra-cool dwarf star about 40 light-years away. Read More