The New Horizons Long Range Reconnaissance Imager (LORRI) took this
4-millisecond exposure of Jupiter and two of its moons at 01:41:04 UTC on
January 17, 2007. The spacecraft was 68.5 million kilometers (42.5 million
miles) from Jupiter, closing in on the giant planet at 41,500 miles
(66,790 kilometers) per hour. The volcanic moon Io is the closest planet
to the right of Jupiter; the icy moon Ganymede is to Io's right. The
shadows of each satellite are visible atop Jupiter's clouds; Ganymede's
shadow is draped over Jupiter's northwestern limb.
Ganymede's average orbit distance from Jupiter is about 1.07 million
kilometers (620,000 miles); Io's is 422,000 kilometers (262,000 miles).
Both Io and Ganymede are larger than Earth's moon; Ganymede is larger than
the planet Mercury.
