Outer Solar System

Solar System

Before spacecraft, how did astronomers determine the mass, size, and composition of the giant planets?

Robotic Spaceflight, Solar System

Will Voyager 1 and Voyager 2 be damaged when they pass through the Oort Cloud?

Science, Solar System

Does our solar system have a new dwarf planet?

Solar System

Astronomers have spotted the most distant comet ever discovered

Science, Solar System

Cryovolcanism on Titan may replenish its thick atmosphere

Solar System

20 years ago, the discovery of Eris spelled doom for planet Pluto

Solar System

JWST reveals surprising surface chemistry is occurring on Pluto’s moon Charon

Solar System

Uranus and Neptune have weird magnetic fields — this might be why

Solar System

Uranus may not have a weird magnetic field after all

Solar System, The Sun

The Sun’s death could mean new life in the outer solar system

Planets

NASA needs you to observe Uranus and Neptune this week

Robotic Spaceflight, Solar System, Space Exploration

Mission into the unknown: Voyager probes celebrate 45 years in space