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Charged Aerosol Release Experiment
The Charged Aerosol Release Experiment also known as CARE, is a project run by NASA which will use a rocket to release dust in the upper atmosphere to form a dusty plasma in space. The clouds thus generated are intended to simulate naturally occurring phenomena called noctilucent clouds, which are the highest clouds in the atmosphere. The CARE experiment is intended to create an artificial dust layer at the boundary of space in a controlled sense, in order to "allow scientists to study different aspects of it, the turbulence generated on the inside, the distribution of dust particles and such." The dust cloud is generated using the Nihka motor dust generator. The dust cloud is composed of aluminum oxide, carbon monoxide, hydrogen chloride, water, and nitrogen, as well as smaller amounts of carbon dioxide, hydrogen, monatomic chlorine, and monatomic hydrogen. According to NASA, Spatial Heterodyne Imager for Mesospheric Radicals (SHIMMER ) instrument will track the CARE dust cloud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Noctilucent Clouds
Noctilucent clouds, or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause. They consist of ice crystals and from the ground are only visible during astronomical twilight. ''Noctilucent'' roughly means "night shining" in Latin. They are most often observed during the summer months from latitudes between ±50° and ±70°. Too faint to be seen in daylight, they are visible only when the observer and the lower layers of the atmosphere are in Earth's shadow, but while these very high clouds are still in sunlight. Recent studies suggest that increased atmospheric methane emissions produce additional water vapor once the methane molecules reach the mesosphere – creating, or reinforcing existing noctilucent clouds. They are the highest clouds in Earth's atmosphere, located in the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Of Space
Boundary or Boundaries may refer to: * Border, in political geography Entertainment *Boundaries (2016 film), ''Boundaries'' (2016 film), a 2016 Canadian film *Boundaries (2018 film), ''Boundaries'' (2018 film), a 2018 American-Canadian road trip film *Boundary (cricket), the edge of the playing field, or a scoring shot where the ball is hit to or beyond that point *Boundary (sports), the sidelines of a field Mathematics and physics *Boundary (topology), the closure minus the interior of a subset of a topological space; an edge in the topology of manifolds, as in the case of a 'manifold with boundary' *Boundary (graph theory), the vertices of edges between a subgraph and the rest of a graph *Boundary (chain complex), its abstractization in chain complexes *Boundary value problem, a differential equation together with a set of additional restraints called the boundary conditions *Boundary (thermodynamic), Boundary (thermodynamics), the edge of a thermodynamic system across which he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Brant (rocket)
The Black Brant is a family of Canadian-designed sounding rockets originally built by Bristol Aerospace, since absorbed by Magellan Aerospace in Winnipeg, Manitoba. Over 800 Black Brants of various versions have been launched since they were first produced in 1961, and the type remains one of the most popular sounding rockets. They have been repeatedly used by the Canadian Space Agency and NASA. History Black Brant was the result of research at Canadian Armament Research and Development Establishment (CARDE) during the 1950s into the nature of the upper part of the atmosphere as part of ongoing research into anti-ballistic missile systems and very-long-range communication. In 1957 CARDE contracted Bristol to produce a simple rocket fuselage, called the Propulsion Test Vehicle, for studies into high-power solid fuels. The resulting design, by Albert Fia, was quite heavy, as it was designed to be able to accommodate a wide variety of engine burning times, propellant loadings and la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
