Volcanoes display the awesome power of Nature like few other events. Now that astronomers are finding rocky worlds orbiting distant stars, they’re asking the next logical questions: Do any of those worlds have volcanoes? And if so, could we detect them? To answer these questions, a team of researchers with support from the NASA Astrobiology Institute (NAI) have shown that large-scale explosive volcanism can be remotely observed on exoplanets around the closest stars using sulfur dioxide as a chemical proxy.