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The drag curve or drag polar is the relationship between the drag on an aircraft and other variables, such as lift, the coefficient of lift, angle-of-attack or speed. It may be described by an equation or displayed as a graph (sometimes called a "polar plot"). [1] Drag may be expressed as actual drag or the coefficient of drag.
The geographic poles are defined by the points on the surface of Earth that are intersected by the axis of rotation. The pole shift hypothesis describes a change in location of these poles with respect to the underlying surface – a phenomenon distinct from the changes in axial orientation with respect to the plane of the ecliptic that are caused by precession and nutation, and is an ...
Polar Resources Ice Mining Experiment-1 (PRIME-1), also known as Intuitive Machines 2 (IM2), is a planned NASA mission to land a robotic probe near the South Pole of the Moon. The mission is a part of the Artemis program .
NASA computer simulation using the model of Glatzmaier and Roberts. [38] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and vertical. The dense clusters of lines are within the Earth's core. [27]
NPOESS was a tri-agency program led by an Integrated Program Office (IPO) containing staff from the US Department of Defense, National Oceanic and Atmospheric Administration, and NASA. [1] NPOESS was to be operated by the NOAA/ National Environmental Satellite, Data, and Information Service (NESDIS) / NPOESS Program Executive Office Flight ...
The book explores a version of pole shift hypothesis postulated by Professor Charles Hapgood in two volumes, plus the 1967 book Cataclysms of the Earth by Hugh Auchincloss Brown. When Brown published "Cataclysms", he was in his 90s, so he is represented in the novel by the character Herbert Allan Boardman (The "HAB" of the title) also in his 90s.
On January 10, 1995, NASA, PBS, and NSF collaborated for the first live television broadcast from the South Pole, titled Spaceship South Pole. [42] During this interactive broadcast, students from several schools in the United States asked the scientists at the station questions about their work and conditions at the pole.
Operation IceBridge (OIB) was a NASA mission to monitor changes in polar ice by utilizing airborne platforms to bridge the observational gap between the ICESat and ICESat-2 satellite missions. The program, which ran from 2009 to 2019, employed various aircraft equipped with advanced instruments to measure ice elevation, thickness, and ...