The action begins on Monday evening, 2nd April, when Venus enters the outskirts of the little dipper-shaped asterism. Look west at sunset for Venus–it’s the brightest thing around–then scan the area using binoculars. The conjunction will be immediately clear. The best evening to look is tonight Tuesday, 3rd April, when the brilliant planet glides just south of the dipper’s bowl. Venus exits by the handle on Wednesday, 4th April. Venus passes through the Pleiades in this way about once every 8 years.
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.