Saturn's moon Prometheus, imaged by #Cassini on December 6, 2015. The F ring can be seen in the background at top.

Here’s a wider view showing Prometheus in context https://twitter.com/jpmajor/status/1291452836631511040

Here's an animated view of Prometheus made from 18 separate images captured by #Cassini over the course of about a hour during a close pass (close = 33,000 km/20,500 miles away) on Jan. 27, 2010. At the end you can see the linear shadows of the F ring on Prometheus.

This "bounce" animation focuses on just that little bit at the end with the F ring shadows, which is of course the best part.