The geocentric theory offered no explanation why the planets were revolving in these circles and offered no plausible picture of the universe as a whole.
Seager called the discovery of the three planets "a huge milestone, " but her excitement is tempered because potentially habitable planets have been announced in the past and there's currently no way to get more details, given how far away they are.
So if life can thrive in the dark, in isolation, in temperatures no warmer than -13C, where else could it be on Earth and beyond, on distant planets or moons for example?