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Solar eclipse: Ex-astronaut explains how to prepare, how to watch


Next Monday’s total solar eclipse is the first in the U.S. since 1979 and the first in 99 years to stretch from coast to coast. Mike Massimino, a former NASA astronaut and the host of Science Channel’s “Great American Eclipse,” is on TODAY to tell you what you need to know about the cosmic event, and Hoda Kotb has tips on how to watch.