what is its speed?
Mach 6.70.
North American X-15
 The X-15 set speed and altitude records in the 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15's official world record for the highest speed ever recorded by a crewed, powered aircraft, set in October 1967 when William J. Knight flew at Mach 6.70 at , a speed of , has remained unbroken .
what is an electron? The electron is a subatomic particle. where can they be applied? In electronics, welding, cathode ray tubes, electron microscopes. any scientists who were involved in the research of it? Richard Laming. did he name it? No, but George Johnstone. what are his other research works? He made significant contributions to cosmic physics and to the theory of gases and estimated the number of molecules in a cubic millimetre of gas. what was his profession? He was professor of physics at Queen's College Galway. how was he honored for his scientific contributions? Craters on Mars and the Moon are named in his honour. what is the planet otherwise called as? Red Planet. why is it so? Due to the effect of the iron oxide prevalent on Mars's surface, which gives it a reddish appearance. any spacecraft that had visited the planet? Mariner 4 and Viking 1. who launched the former? NASA. when was it done? On 28 November 1964. which other programs have the agency been involed? They sent the first Americans into low Earth orbit (LEO) and Apollo program. what is the latter? Program that succeeded in landing the first humans on the Moon. when did it happen? From 1969 to 1972. which spacecraft was used ? Apollo 11. who travelled in it? Neil Armstrong, Buzz Aldrin and Michael Collins. who among them takes the pride of setting foot first? Neil Alden Armstrong. what was his profession before taking his space voyage ? A naval aviator, test pilot, and university professor. which aircraft had he flown? North American X-15.
wiki:19477024
North American X-15 [SEP] Introduction
The North American X-15 was a hypersonic rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15's official world record for the highest speed ever recorded by a crewed, powered aircraft, set in October 1967 when William J. Knight flew at Mach 6.70 at , a speed of , has remained unbroken . During the X-15 program, 12 pilots flew a combined 199 flights.