In some sense, Ultima has a fairly simplified geology, a bit like Frankenstein here, ultima Thule has a lot more stuff here going on. Jeff Moore More Quotes by Jeff Moore More Quotes From Jeff Moore The surface of Pluto is every bit as complex as that of Mars, the randomly jumbled mountains might be huge blocks of hard water ice floating within a vast, denser, softer deposit of frozen nitrogen within the region informally named Sputnik Planum. Jeff Moore science We suspect that the hills may have been pushed up from underneath, or they are erosion-resistant knobs that are standing out as erosion occurs. Jeff Moore science