AST251H1 Lecture Notes - Lecture 10: Radial Velocity, Minimum Mass, Exoplanet
29 Jan 2018
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Document Summary
Jupiters moons are comparable to size of our moon. Europa has been known to have lots of water. When the ice cracks, liquid water rushes through and refreezes. Under the surface of europa, it could be slush or a liquid ocean. If europa has a conducting layer, it will have a magnetic field. Pure water cannot conduct electricity, it has to be mixed with other minerals. Europa is heated by tides, and this helps to crack the surface. This tells us that the(cid:396)e is p(cid:396)o(cid:271)a(cid:271)ly li(cid:395)uid (cid:449)ate(cid:396) (cid:271)elo(cid:449) the su(cid:396)fa(cid:272)e, (cid:271)ut it does(cid:374)"t tell us if the(cid:396)es life o(cid:396) not. Europa is 5x further away from the sun than the earth is. Theres very few craters on ganymede, meaning the surface resurfaces so theres probably water. Callisto has lots of (cid:272)(cid:396)ate(cid:396)s, p(cid:396)o(cid:271)a(cid:271)ly does(cid:374)"t (cid:396)esu(cid:396)fa(cid:272)e. Saturn has many moons, but titan is the biggest.
