JWST discoveries

NASA's James Webb Space Telescope (JWST) has made new discoveries on Jupiter's moons Io and Ganymede.

Sulfur monoxide on Io

The telescope, for the first time, detected sulfur monoxide gas on Io, which is the most volcanically active body in the solar system.

Ganymede

Meanwhile, hydrogen peroxide was discovered in Ganymede's polar regions, a first for the largest moon in the solar system.

Outer solar system insights

The latest Webb findings have major implications for our understanding of icy bodies in the outer solar system.

Radiolysis on Ganymede

Hydrogen peroxide on Ganymede is believed to be the result of radiolysis, a process where charged particles break apart water molecules.

Io's active volcanoes

Sulfur monoxide on Io was detected during an eruption from one of its known volcanoes called Kanehekili Fluctus.