Word: stefanik
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Dates: during 1990-1999
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...really kind of interesting to look at," says Robert P. Stefanik, director of the Oak Ridge Observatory, 30 miles away from Cambridge. "What you sometimes can see is the changing brightness, since as it moves, the panels reflect light in different ways relative to the earth...
Because both spacecraft travel at over 17,000 miles per hour, it takes them only 90 minutes to orbit the earth. As a result, Stefanik says there is a narrow window for stationary observers to spot the spacecraft...
What the data may be saying is simply that the dividing line between stars and planets may be less distinct than astronomers had believed. "Everything found so far poses challenging questions for planetary formation theory," says astronomer Robert Stefanik, of the Harvard-Smithsonian Center for Astrophysics. That was underscored last week when, after weeks of government shutdown, results were released from a NASA experiment much closer to home. The probe's plunge from the Galileo spacecraft into Jupiter's atmosphere showed that the planet has higher winds, less lightning, less water, helium and neon, and--at the point of impact...