A distant ice world where nitrogen glaciers slowly flow across the plains.
Pluto has a giant heart-shaped glacier made of frozen nitrogen (Sputnik Planitia). When Pluto swings closer to the Sun in its oval orbit, the surface ice warms into a hazy sky; as it pulls away, the sky freezes and falls back down like snow.
Verified science answered in plain, accessible language.
The famous heart-shaped region is Tombaugh Regio. Its western lobe, Sputnik Planitia, is a 1,000-km-wide basin filled with actively churning nitrogen, methane, and carbon monoxide ice.
Yes. When Pluto's eccentric orbit takes it further from the Sun, its tenuous nitrogen atmosphere cools and freezes out directly onto the surface as volatile snow.
Pluto averages -225°C (-373°F), just 48 Kelvin above absolute zero. At night, surface valleys plunge below -232°C.
The estimated average temperature on Pluto is -225°C / -373°F.
A full day-night cycle on Pluto lasts about 153.3 Earth hours.
Pluto is 4.3 – 7.5 billion km from Earth.
Pluto's atmospheric pressure is 10 to 20 microbars (100,000 times less than Earth).
A thin nitrogen haze that expands when close to the Sun and freezes onto the ground when far away.
Gentle breezes drifting across vast plains of frozen nitrogen.
Sublimation weather where nitrogen ice turns straight into vapor, creating hazy ice clouds.
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