7
Must I wait centuries
to see a total solar eclipse?
Not if you don't mind doing
some traveling. On average, a total solar eclipse is visible about every 18
months somewhere on the Earth's surface. Unfortunately, the tracks of total
solar eclipses seem to have this perverse habit of occurring over sparsely populated
regions of the Earth or out over the open oceans. The planet is two-thirds water,
after all.
And even though a typical
eclipse track can run for several thousand miles or more, the width of that
track is likely to be less than 100 miles. So, the odds are that any one particular
spot on the Earth will have to wait a very long time - about 375 years) - between
total solar eclipses.
But that nearly four-century
wait is merely a statistical average. Indeed, the paths of different eclipses
sometimes will criss-cross over a specific place, so in some cases the wait
isn't so long at all.
For example: a forty-mile
stretch of the Atlantic coast of Angola, just north of Lobito, experienced a
total solar eclipse on June 21, 2001 and will be treated to another later this
year (December 4) after a wait of less than 18 months. On the other extreme,
we can cite the case of the islands of Bermuda. Their last total eclipse was
on August 30, 1532 with the next one scheduled for February 16, 2352! [All
about Eclipses]
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seasonal change!