| http://www.w3.org/ns/prov#value | - Observations show their surfaces to be very dry, but they same types of uncertainties arise about the interiors.Some nice Random Space Facts about Phobos and Deimos from the meeting: They are several kilometers across, and irregularly shaped; Phobos is actually significantly bigger, having about 10 times the mass; Phobos orbits much closer and more rapidly; Phobos' o
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