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The National Aeronautics and Space Administration (NASA / ˈ n æ s ə /) is an independent agency of the US federal government responsible for the United States' civil space program, aeronautics research and space research.
NASA planners invented the term extravehicular activity (abbreviated with the acronym EVA) in the early 1960s for the Apollo program to land humans on the Moon, because the astronauts would leave the spacecraft to collect lunar material samples and deploy scientific experiments.
A geomagnetic excursion, like a geomagnetic reversal, is a significant change in the Earth's magnetic field.Unlike reversals, an excursion is not a long-term re-orientation of the large-scale field, but rather represents a dramatic, typically a (geologically) short-lived change in field intensity, with a variation in pole orientation of up to 45° from the previous position.
Brownian excursion, a concept in the theory of stochastic processes; Critical excursion, or criticality accident, a topic in nuclear physics; Diaphragmatic excursion, the movement of the thoracic diaphragm during breathing; Geomagnetic excursion, a change in the Earth's magnetic field; Excursion (audio), the linear movement range of a speaker
The third edition (revised), published in 2008, has 1,264 pages, somewhat smaller than the Concise Oxford English Dictionary, and is distinct from the "Compact" (single- and two-volume photo-reduced) editions of the multi-volume Oxford English Dictionary.
Materials Adherence Experiment, a material science experiment conducted during NASA's Mars Pathfinder mission; Mean absolute error, a measure of statistical deviation; Member of the Academia Europaea, a European academic award; Motion aftereffect, a visual illusion; MAE-East or MAE-West, two of the first Internet Exchange Points
When NASA awarded the initial Apollo contract to North American Aviation on November 28, 1961, it was still assumed the lunar landing would be achieved by direct ascent rather than by lunar orbit rendezvous. [4] Therefore, design proceeded without a means of docking the command module to a lunar excursion module (LEM). But the change to lunar ...
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