Traveling farther than any spacecraft before
it, Voyager 2 has the first-ever encounter with Uranus, nearly 3
billion kilometers (1.8 billion miles) from Earth.
Voyager 2 takes clear, high-resolution images of each of the five
large moons of Uranus known before the encounter: Miranda, Ariel,
Umbriel, Titania and Oberon. The two largest, Titania and Oberon,
are about 1,600 kilometers (1,000 miles) in diameter, roughly half
the size of Earth's Moon. The smallest, Miranda, is only 500 kilometers
(300 miles) across. Voyager 2 also discovers 10 new moons at Uranus,
bringing the total number of known Uranian satellites to 15.