Transit of Naiad
Transit of Naiad Voyager 2 captured the shadow of Naiad upon Neptune during a transit on August 24, 1989, with its wide-angle camera. NASA / JPL-Caltech / ISS / Justin Cowart

The inset is shown at 2x magnification, with a 3-pixel unsharp mask applied to increase contrast between the shadow and the clouds.

"We're changing the world. Are you in?"
- CEO Bill Nye

Sign up for email updates