Have the Planets of the Trappist 1 Star System Evolved like Venus?
Not all stars are like the sun, a yellow class G star. M-Type stars like Trappist 1 comprise 70% of all stars in the Universe. These cool, ancient objects glow a deep red from a high output of infrared radiation and exist 46-700 billion or more years, according to Mathew Anderson, author of Habitable Exoplanets: Red Dwarf Systems Like TRAPPIST-1.