 The satellite, called MESAT, contains experiments developed by Maine high school and middle school students studying coastal pollution, algae blooms, and urban heat islands. MESAT was one of several CubeSat payloads launched overnight by the company Firefly Aerospace. The launch had been delayed from earlier this week due to technical issues. The rocket took off from Vandenberg Space Force Base in Northern California, which can launch payloads into polar orbits around the Earth.