Venus Invades the Pleiades
April 2, 2012: Watch out Seven Sisters, Venus is coming.This week the second planet from the sun will pass directly in front of the Pleiades star cluster. It's a rare sunset conjunction that's easy to find with the unaided eye, but best seen through binoculars or a small telescope.
Venus approaching the Pleiades on March 31st, photographed by
astronomy professor Jimmy Westlake of Stagecoach, Colorado.
To say this is a mixture of dissimilar things would be an understatement.
Click to view a sky map of the conjunction.
Venus is just the opposite. Dazzling, bright enough to cast faint shadows, it beams down from the heavens and grabs you when you're not even looking.
The Pleiades, also known as the "Seven Sisters," are a cluster of young stars. They formed barely 100 million years ago during the age of dinosaurs on Earth from a collapsing cloud of interstellar gas. The biggest and brightest members are blue-white and about five times wider than our own sun.
Because of their distance, about 400 light years away, the Pleiades are near the limit of naked-eye visibility. When Venus joins them in conjunction, it will look like a supernova has gone off inside the cluster. Venus's thick clouds reflect so much sunlight, the planet outshines every thing in the night sky except the Moon. Strangely, though, the Pleiades do not look puny in comparison, just delicately beautiful.
Look west just after sunset, and see for yourself.
Author:Dr. Tony Phillips| Production editor: Dr. Tony Phillips | Credit: Science@NASA
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