ScienceNASA Spacecraft Crashes Into Mercury, Concluding 4-Year Study Of PlanetKQED ScienceApr 30, 2015Save ArticleSave ArticleFailed to save articlePlease try againFacebookShare-FBTwitterShare-TwitterEmailShare-EmailCopy LinkCopy LinkThis article is more than 8 years old.Copyright 2015 NPR. To see more, visit http://www.npr.org/. ...Read More Source: NPR Science - ingested into KQED Sponsored