Answer 1:
Europa is colder than Earth. Europa's average
surface temperature ranges from about -260
degrees F (-160 degrees C) at the equator to
about -370 degrees F (-220 degrees C) at the
poles. This, of course, would be much too cold
for humans to tolerate.
Despite these cold temperatures, however,
some scientists believe that a layer of liquid
water exists beneath Europa's icy crust. Such a
subsurface ocean would, of course, mean that the
temperature beneath the crust would have to be
much warmer, warm enough for water to exist as a
liquid.
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