space electric rocket tests
61List of Historic Mechanical Engineering Landmarks — The following is a list of Historic Mechanical Engineering Landmarks as designated by the American Society of Mechanical Engineers since it began the program in 1971. The designation is granted to existing artifacts or systems representing a… …
62Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …
63Mojave Airport & Spaceport — |d=LoffAoffDbSoff|s=. [cite gnis|1653745|Mojave Airport] It is the first facility to be licensed in the United States for horizontal launches of reusable spacecraft, being certified as a spaceport by the Federal Aviation Administration on June 17 …
64India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
65Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
66Introduction to general relativity — General relativity (GR) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915. According to general relativity, the observed gravitational attraction between masses results from the warping of space and time by… …
67Interplanetary spaceflight — or interplanetary travel is travel between planets within a single planetary system. In practice, spaceflights of this type are confined to travel between the planets of the Solar System. Current achievements in interplanetary travel Remotely… …
68Northrop P-61 Black Widow — P 61 Black Widow A P 61A 1NO of 419th Night Fighter Squadron Role Night fighter …
69Aviation history — deals with the development of mechanical flight, from the earliest attempts in kite powered and gliding flight, to powered heavier than air flight, and beyond. Humanity s desire to fly possibly first found expression in China, where people flying …
70United States Air Force Research Laboratory — Infobox Military Unit unit name= Air Force Research Laboratory caption=Emblem of AFRL dates= October 1997–Present country= United States branch= Air Force type= Research and development size= 4,200 civilian 1,200 military command structure= Air… …
