"I shall name it Mini-Moon."

The international Cassini spacecraft has spied a tiny new moon hidden in a gap in Saturn's outer ring, scientists said.

"The moon was spotted earlier this month in the center of the Keeler gap, making waves in the gap edges as it orbits. Tentatively called S/2005 S1, the moon measures four miles across and is about 85,000 miles from the center of Saturn."