Green Comet SWAN Erupts in Bright Icy Blast as It Approaches Earth. Is It a Cryovolcano?

The photos show that Comet SWAN brightened significantly from April 3 to 6 before fading again, indicating that some sort of outburst occurred. (Photo credit: Mike Olason) An emerald-green comet discovered earlier this month has just “exploded” as it continues…