PLANET F IS COLDER THAN EARTH

The planet receives less than half the heat that Earth gets from the Sun, but a water cycle - vital for life - could easily exist. DISTANCE TO THE STAR: 0.037 AU ORBIT TIME: 9.21 days MASS: 0.68 Earth masses RADIUS: 1.04 times Earth's IRRADIATION: 0.38 times the solar irradiation on Earth