Carbon dioxide emissions from rising magma is one of the earliest signs that a volcano is waking up, but measuring it directly is notoriously difficult.
Mount Fentale hasn't erupted in over 200 years, but the mysterious methane emerging from it has scientists scratching their heads.
Using Webb, scientists have discovered elusive chemical compounds, each on a different Jovian moon, including one that's a common disinfectant.
Webcam images showed a glow emanating from the volcano's summit—an indication that an eruption has begun.
The volcano has been active for the past week, dropping tons of soot over surrounding towns.
New analysis of the planet’s surface suggests an eruption happened in modern times.