A planet outside our Solar System.
A planet composed primarily of silicate rocks or metals, with a density greater than 3 g/cm^3.
A terrestrial planet substantially less massive than Earth, classified by a mass less than 1 Earth mass and radius less than 1 Earth radius.
A terrestrial planet more massive than Earth but lighter than Neptune, with a mass between 1 and 10 Earth masses and 1 and 1.75 Earth radii.
A massive terrestrial planet at least 10 times the mass of Earth.
A terrestrial planet within the habitable zone, classified by a terrestrial composition, a habitable zone score greater than 0.5, and a habitability score greater than 0.7.
A planet with a very high similarity to Earth, classified by a habitability score greater than 0.9.
A planet with conditions even more suitable for life than Earth, with a habitability score greater than 0.9 and orbiting a K-type star.
A terrestrial planet with a surface of molten lava and an equilibrium temperature greater than 1200 K.