Several spots are evenly spaced along Pluto's equator, with each having a diameter of about 300 miles, according to NASA.
"It's a real puzzle -- we don't know what the spots are, and we can't wait to find out," Alan Stern, principal investigator for New Horizons, said in a statement.
Four 300-mile-wide missile ports! Good grief! If they identify us we're in big trouble.
Wake up, sheeple!