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Longest solar eclipse of 21st century will be tomorrow – July 22, 2009

An Antarctic Total Solar Eclipse photo Fred Bruenjes (moonglow.net)

Antarctic Total Solar Eclipse photo Fred Bruenjes (moonglow.net)

Antarctic Total Solar Eclipse photo Fred Bruenjes (moonglow.net)

Lasting 6 minutes and 39 seconds, it will amaze people living from India and Afghanistan to the mid-Pacific Ocean – spread the word today because it will all be over tomorrow

NJN Network, Charlottetown, Prince Edward Island, Canada, July 20, 2009 with story from Science@NASA

If you live in somewhere new the Asian or Indian continents starting tomorrow morning you will see the sun rise over the water as large black hold with sun beams streaming in all directions. The picture above was taken of a similar solar eclipse in a Antarctic sunrise.
By Dr.Tony Phillips | Credit: Science@NASA

Six minutes and 39 seconds to be exact. That’s the duration of this week’s total solar eclipse–the longest of the 21st century.

The event begins at the crack of dawn on Wednesday, July 22nd, in the Gulf of Khambhat just east of India. Morning fishermen will experience a sunrise like nothing they’ve ever seen before. Rising out of the waves in place of the usual sun will be an inky-black hole surrounded by pale streamers splayed across the sky. Sea birds will stop squawking, unsure if the day is beginning or not, as a strange shadow pushes back the dawn and stirs up a breeze of unaccustomed chill.

Watch the solar eclipse as it passes across the Indian and Pacific oceans. (It should animate without clicking. Please report if it doesn’t.)

Longest eclipse gif

Regional animations of India and China are also available. Credit: Larry Koehn of ShadowAndSubstance.com.

Most solar eclipses produce this sort of surreal experience for a few minutes at most. The eclipse of July 22, 2009, however, will last as long as 6 minutes and 39 seconds in some places, not far short of the 7 and a half minute theoretical maximum. It won’t be surpassed in duration until the eclipse of June 13, 2132.

From the Gulf of Khambhat, the Moon’s shadow will race east across India, China, and the Ryukyu Islands of Japan.

The path of totality cuts across many large cities. The shadow will linger over Shanghai, the largest city in China, for six full minutes, giving 20 million residents a lengthy and stunning view of the sun’s ghostly corona. Other large cities in the path of totality include Surat, Vadodara, Bhopal, Varanasi, Chengdu, Chongqing, Wuhan, Hefei, Hangzhou. The population of each numbers in the millions, making this possibly the best-observed solar eclipse in human history.

The eclipse is extra-long because of a lucky coincidence, made possible by the elliptical shape of planetary orbits. On July 22nd, Earth happens to be near its farthest point from the sun. A small sun means the Moon can cover it longer. At the same time, the Moon will be near its closest point to Earth. A large Moon covers the sun longer, lengthening the eclipse even more.

The leisurely pace of the eclipse could have a transformative effect on witnesses. Total eclipses have been known to turn ordinary folk into life-long “eclipse-chasers” willing to spend thousands of dollars and travel tens of thousands of miles to feel the Moon’s cool shadow and behold the sun’s pale atmosphere just one more time. A few extra minutes of wonder will intensify this effect to an unknown degree.

Live webcasts of the eclipse–not the next best thing to being there, but the only substitute available to many readers–may be found at the website of the San Francisco Exploratorium.

Let the counting begin.

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Except where otherwise noted, this work is licensed under a Creative Commons License – NJN Network Inc.

1 Comment

  1. pregnancy

    It was beautiful eclipse, just saw it on the website when it turn the would like a night time… I was missing out that time cause I was in BKK, Thailand and it was raining heavy this morning.

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