Seventh planet from the Sun. Tilted completely on its side, it rolls around the Sun like a bowling ball. An icy world of methane that glows pale blue-green.
Uranus rotates on its side — its axis is tilted 98 degrees. This extreme tilt likely came from a massive collision long ago. It's an "ice giant" made of water, ammonia, and methane ices.
Astronomers believe a planet-sized object slammed into Uranus early in its history, knocking it sideways. This impact may also explain why Uranus is colder than Neptune.
Each pole experiences this extreme cycle
Uranus has 13 known rings — dark, narrow, and made of large particles. They're so faint they weren't discovered until 1977, when they briefly blocked a star's light.
All 27 moons are named after characters from Shakespeare and Pope. Miranda looks like a jigsaw puzzle — its surface is a chaotic mix of ridges, canyons, and smooth plains.
Only one spacecraft has visited Uranus — Voyager 2 in 1986. It discovered 10 new moons, mapped the magnetic field, and revealed the planet's surprisingly bland appearance.