How to see the rare 'Christmas Star' over Arizona
How to see the rare 'Christmas Star' over Arizona Anne Ryman, Arizona Republic Replay Video UP NEXT Jupiter and Saturn will appear so close together after sunset on Monday that they will look like a single, bright star. The phenomenon, known as the Great Conjunction, only happens about once every 20 years. This year is special because the planets will be the closest they have been in 400 years. Local astronomers say this is a sight you shouldn't miss. "It's visually impressive," said Patrick Young, an associate professor at Arizona State University's School of Earth ...