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Hiding the sisters: the Moon occults the Pleiades

On the evening of the 13th of November 2008, the Moon will glide across the face of the Pleiades star cluster. This star cluster is also known as the seven sisters, as the seven brightest stars in the cluster are visible to the unaided eye - although over 50 can be seen through binoculars.

We call such events, when one astronomical object covers another, an occultation. So on the 13th, the Moon occults the Pleiades. It begins when the Moon rises in the East at about 16:20 GMT, and it takes the Moon 6 hours to pass across all seven of the sisters.

The event will not look so spectacular, because the Moon's brightness will all but drown-out the view of the star cluster! But take a look through binoculars or a telescope, and you will be able to see the Moon slowly glide over the stars in the cluster over the course of a few hours.

And as it does, just think - You are actually watching the Moon orbit around the Earth, passing in front of the background of stars, at over 2000 mph!

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This page contains a single entry from the blog posted on November 11, 2008 12:00 PM.

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