A comet from another star system is putting on a show that looks uncannily like a heartbeat, with bright jets of gas and dust switching on and off in a steady rhythm. New NASA images of Comet 3I/ATLAS ...
A comet shouldn’t have a heartbeat. Yet NASA’s latest images of the interstellar object 3I/ATLAS detail just that: jets of gas and dust brightening and dimming in an exact rhythm once every 16.16 ...