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The Harrier, informally referred to as the Harrier jump jet, is a family of jet-powered attack aircraft capable of vertical/short takeoff and landing operations (V/STOL). ). Named after the bird of prey, [1] it was originally developed by British manufacturer Hawker Siddeley in the 1
The Apollo 10 crew (Thomas Stafford, John W. Young and Eugene Cernan) achieved the highest speed relative to Earth ever attained by humans: 39,897 kilometers per hour (11,082 meters per second or 24,791 miles per hour, about 32 times the speed of sound and 0.0037% of the speed of light). [14] The record was set 26 May 1969. [14]
Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom , the United States , and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.
In the Known Space universe, constructed by Larry Niven, Earth uses constant acceleration drives in the form of Bussard ramjets to help colonize the nearest planetary systems. In the non-known space novel A World Out of Time , Jerome Branch Corbell (for himself), "takes" a ramjet to the Galactic Center and back in 150 years ships time (most of ...
[3] In November 1961, Air Force Major Robert White flew the X-15 research aircraft at speeds over Mach 6. [4] [5] On 3 October 1967, in California, an X-15 reached Mach 6.7. [6] The reentry problem of a space vehicle was extensively studied. [7] The NASA X-43A flew on scramjet for 10 seconds, and then glided for 10 minutes on its last flight in ...
Launched one day behind revised schedule (planned for the 100th anniversary of the publication of Einstein's General Theory of Relativity), on 3 December 2015. Arrived at L 1 on 22 January 2016. [25] LISA Pathfinder was deactivated on 30 June 2017. [26] Solar and Heliospheric Observatory (SOHO) Sun–Earth L 1: ESA, NASA: Orbiting near L 1 ...
An orbital spaceflight (or orbital flight) is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit. To do this around the Earth , it must be on a free trajectory which has an altitude at perigee (altitude at closest approach) around 80 kilometers (50 mi); this is the boundary of ...
The Paris Gun (German: Paris-Geschütz) was a German long-range siege gun used to bombard Paris during World War I. It was in service from March–August 1918. Its 106-kilogram (234 lb) shells had a range of about 130 km (80 mi) with a maximum altitude of about 42.3 km (26.3 mi).