Converter type: area surface units. This online area surface from mm2, sq mm into m2, sq m converter is a handy tool not just for certified or experienced professionals. First unit: square millimeter (mm2, sq mm) is used for measuring area. Second: square meter (m2, sq m) is unit of area.
At 3:21 p.m. (EDT), NASA'S Juno Mission spacecraft will slingshot around Earth towards Jupiter, accelerating to 25 miles per second along the way and becoming the fastest man-made object in history. A .50-caliber bullet travels at about half a mile a second, by contrast -- nowhere near the blistering speed of Juno.
The SR-72 is the successor to the SR-71 Blackbird spy plane, which was the fastest plane to ever exist. Built by Lockheed Martin in the 1960s, the SR-71 could reach speeds exceeding Mach 3 (above 2,200 mph). That's over 3 times faster than the speed of sound. The recon jets went out of service in 1998. Development of the SR-72 was announced in 2013.