Meteor showers happen when Earth passes through a stream of icy debris left behind by a comet. The famous Comet Halley spawned last week's Eta Aquarids.
On May 2, 2016, Walter E. Elliot took this shot of clouds rolling over the channel that connects Michigan's White Lake to Lake Michigan. Doesn't it look like an oil painting?
"Since three years ago, we have planned to shoot this photo. We went to the zone repeatedly but every time we got nothing ... until now." - Sergio Vindas
Saturn's rings appear to be intersecting in an impossible way. But - in this new Cassini spacecraft image - we're really just seeing a play of light and shadow.