Comets often look like simple icy wanderers with dusty tails, but the latest JWST observations show that their activity can be far more chemically selective. In one of the clearest demonstrations yet, ...

Astronomers using the Atacama Large Millimeter/submillimeter Array in Chile have detected extraordinarily high levels of methanol in interstellar comet 3I/ATLAS, with methanol-to-hydrogen-cyanide ...