the.com/habitability
the universe's pickiest real estate metric: not too hot, not too cold, just liquid water.
means a measure of whether a place, usually a planet, can support life as we know it, mainly by keeping water wet.
from from latin habitare, to dwell repeatedly, the frequentative of habere, to have or hold — so habitability is literally the capacity to be held onto and lived in.
goldilocks zonethe orbital band where water stays liquid, not ice or steam
earth's flukea large moon stabilizes our tilt, keeping seasons livable
mars lost itweak magnetic field let solar wind strip its atmosphere
biosignature biaswe mostly search for life that resembles our own