"Calculations that use a slightly larger radius for the size of the sun yield an eclipse path that is slightly narrower," Dr. Michael Kirk, a research scientist in the Heliophysics Science Division at NASA's Goddard Space Flight Center, told Thrillist. "This difference would only affect cities on the very edge of the path of totality, where blanket predictions are difficult regardless—a few city blocks one way or the other could mean 20, 10, or 0 seconds of totality."Against TonyC's recommendation, we are going for the edge. Just inside by about 3km.
Additionally, the size of the sun isn't the only factor that could affect the path's predicted width and size. "Uncertainty in the Earth's rotation can also affect eclipse predictions on this level," explains Dr. Kirk. "Traveling towards the center of the path of totality—even a mile or two—will quickly increase the length of totality that people can see."
Did the Solar Eclipse Path of Totality Just Change? Here's What to Know
A NASA scientist explains the real deal.
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