Planets Unlike Any in Our Solar System

TOI-270 Star System


“The tiny star TOI-270 (less than half the size and temperature of our Sun) hosts one super-Earth and two sub-Neptunes. In our solar system, there is absolutely nothing that resembles such intermediate planets, with a size and composition somewhere in the middle of Earth and Neptune (4 Earth radii); we directly jump from rocky worlds (like Earth) to gas-dominated worlds (like Neptune),” astrophysicist Maximilian Gunther, an ESA Fellow at the European Space Research and Technology Centre (ESTEC), told The Daily Galaxy.