Ackermand et al.(2006): Lazulite-bearing metaquartzite of the Itremo Group (Central Madagascar); Scientific significance and economic importance in Proceedings of the Malagasy-German Research Cooperation in Life and Earth sciences, 5-18
The fastest fighter aircraft is the MiG 25, with speeds topping at Mach 3.2 (2,450 mph/4,000 km/h). Pilots were not allowed to go beyond Mach 2.8. Above Mach 2.8, the engines would overheat and burn up.
The hummingbird that's faster than a fighter jet. A scientist has caught a hummingbird hitting a top speed twice that of the fastest fighter jet &ndash; at least relatively. The Annaâs hummingbird, now believed to be the fastest bird in the world relative to its size, can reach speeds of 50mph, or nearly 385 body lengths per second. That may seem slow compared with a Eurofighter's top speed of 1,320mph, but even at that speed the jet manages to cover just 39 body lengths per second.