Void
Atlas
Stranger than
fiction
NeptuneIce giant
2,000 km/h
The fastest planetary winds we know
Neptune receives little solar energy, yet frozen methane clouds race through its atmosphere at more than 1,200 miles per hour.
SaturnGas giant
0.69
A planet lighter than water
Saturn is the least dense planet. In an impossibly large ocean, the entire world would float.
TitanAlien weather
CH4
Methane rain fills real seas
Titan has clouds, rain, rivers and lakes — but its water-like cycle runs on liquid methane and ethane.
MercuryPolar shadow
Ice
Frozen water beside the Sun
Deep polar craters never see daylight, preserving water ice on the planet closest to the Sun.
MarsOlympus Mons
40 km
A volcano on a planetary scale
Olympus Mons rises roughly 40 kilometers from base to summit — nearly five Everests.