GREENBELT, Md. — The discovery of water geysers over the south pole of Jupiter’s moon Europa has spurred NASA managers to begin working in earnest toward a New Frontiers-class flyby mission there in the 2020s. John Grunsfeld, the associate administrator for science, told the Goddard Memorial Symposium on March 5 that his mission directorate will issue a request for information (RFI) soon on what scientists hope to discover by sending a spacecraft skimming through the geysers as close as ...


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