How does Kepler-186f's energy receipt compare to that of Earth?
Answer
It receives about one-third the energy Earth gets from the Sun
Kepler-186f orbits an M-dwarf star, which is smaller and cooler than our Sun. Although it is positioned within that star's Habitable Zone, its resulting climate is dictated by the lower stellar output. The text specifies that Kepler-186f intercepts approximately only one-third of the solar energy flux that Earth receives from the Sun. This lower energy level suggests that, even within the HZ, the surface temperatures on Kepler-186f are likely much cooler than Earth's average.
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