Do you like it here? <a href=" http://www.chesapeakebaypacking.com/buy-tretinoin-cream-0025.pdf#furry ">where to buy tretinoin cream for stretch marks</a> Most of what scientists know of Europa has been gleaned from a dozen or so close flybys from NASA's Voyager 2 spacecraft in 1979 and NASA's Galileo spacecraft that passed by in the mid-1990s. The moon is a fractured, ice-covered world that may possess liquid water ocean underneath its surface. This, in turn, could be hospitable to microbial life. Yet actually discovering this life is another matter entirely, and something that would need quite a bit of preparation.