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Donald Wegel: Who's Who at NASA

Published: March 1, 2012, 5 p.m.

Scientists at NASA's Goddard Space Flight Center in Greenbelt Maryland are in the early stages of designing a sample-collecting comet harpoon. NASA Goddard's Donald Wegel, lead engineer on the project, will work with researchers to send a spacecraft to rendezvous with the comet, and then fire a harpoon to acquire samples from specific locations.