An ice giant knocked completely on its side, enduring 42-year winters.
Uranus rolls around the Sun on its side like a bowling ball. Because of this tilt, each pole faces 42 years of continuous sunlight followed by 42 years of pitch-black winter, creating unusual seasonal shifts.
Uranus has no solid ground: it transitions from cryogenic gaseous hydrogen/methane directly into a scalding, dense supercritical slush of water, ammonia, and methane ice. Sinking into Uranus means freezing at -224°C in howling 900 km/h winds before being crushed into oblivion by hot ionic fluid under massive gravitational pressure.
Verified science answered in plain, accessible language.
Uranus has an axial tilt of 97.8 degrees, likely caused by a cataclysmic collision with an Earth-sized protoplanet early in solar system history.
Methane in Uranus' upper atmosphere absorbs red wavelengths of sunlight while reflecting back cool cyan and green light into space.
Yes! Even though Neptune is farther from the Sun, Uranus holds the record for the coldest recorded atmospheric temperature (-224°C / -371°F) because it emits virtually no internal heat.
The estimated average temperature on Uranus is -195°C / -319°F.
A full day-night cycle on Uranus lasts about 17.24 Earth hours.
Uranus is 2.6 – 3.2 billion km from Earth.
Uranus's atmospheric pressure is Deep mantle pressures exceeding hundreds of kilobars.
Hydrogen, helium, and methane ice, which absorbs red light to give the planet its cyan glow.
Retrograde jet streams racing up to 900 km/h.
Methane clouds and extreme 42-year seasons caused by its 98-degree sideways tilt.
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