Van Allen belts At least two doughnut-shaped regions of magnetically trapped charged particles high above Earth's atmosphere.
variable star A star whose luminosity changes with time.
Van Allen Belts- radiation zones of charged particles surrounding the Earth
Variable star- any star, the brightness of which appears to change, with periods ranging from minutes to years ...
Van Allen Belts
The zones surrounding the Earth which contain charged particles, trapped by the magnetosphere.
Venera
A program of the former Soviet Union which sent the first probes to the surface of Venus in the 1970's.
Van Allen Belts
Radiation belts of high-energy particles trapped in the earth's magnetosphere.
Variable Star ...
Van Allen Belts
radiation zones of charged particles that surround the Earth. The shape of the Van Allen belts is determined
by the Earth's magnetic field.
Variable Star
a star that fluctuates in brightness. These include eclipsing binaries.
Van Allen Belts - Two doughnut-shaped regions in the Earth's magnetosphere within which many energetic ions and electrons are trapped
Velocity - A physical quantity that gives the speed of a body and the direction in which it is moving ...
VAN ALLEN BELTS
The Van Allen radiation belts are two doughnut-shaped belts of ionized gas (plasma) that circle the Earth.
Van Allen belts Doughnut-shaped regions of magnetically trapped charged particles high above the Earth's atmosphere. [More Info]
variable star A star whose luminosity changes with time. [More Info] ...
Van Allen Belts
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van Allen belts - (n.)
Zones in the earth's magnetosphere where charged particles are confined by the earth's magnetic field. There are two main belts, one centered at an altitude of roughly 1.5 times the earth' radius, and the other between 4.
The Van Allen Belts are regions of high radiation trapped by the magnetosphere which are rotationally symmetric about Earth's magnetic axis (which is tilted and offset from Earth's rotational axis).
The term Van Allen Belts refers specifically to the radiation belts surrounding Earth; however, similar radiation belts have been discovered around other planets. The Sun does not support long-term radiation belts.
The inner and outer Van Allen belts are illustrated in the top figure. The primary source of these charged particles is the stream of particles emanating from the Sun that we call the solar wind.
The radiation belts surrounding Earth are known as the Van Allen belts.
Solar Atmosphere The atmosphere of the Sun. An atmosphere is generally the outermost gaseous layers of a planet, natural satellite, or star.
Van Allen belts
Van Biesbroeck 8
Van Maanen's Star
variable stars
variable star naming
Varuna (minor planet 20000)
V-class asteroid
Vega (Alpha Lyrae)
Veil Nebula (NGC 6960, NGC 6979, NGC 6992/5)
Vela (constellation) ...
Such particles are usually deflected by the field, though some particles are trapped for a while in the Van Allen Belts.
Other Planets / Extrasolar Atmosphere refers to the application of meteorological principles to other bodies of the solar system including the application of: Atmospheric electricity and terrestrial magnetism (including ionosphere, Van Allen belts, ...
Much of this argument centres on the Van Allen belts. These magnetic fields around the earth trap particles from the solar winds and the theory is that passing through these regions would have given the astronauts deadly amounts of radiation ...
emission; that is, radiation emitted by extremely high-speed electrons moving in a magnetic field within a toroidal, or doughnut-shaped, region surrounding Jupiter--a phenomenon closely analogous to that of the terrestrial Van Allen belts.
The trapped radiation belts near Jupiter present a hazard to spacecraft as do Earth's Van Allen belts, although the Jovian particle flux and distribution differ from Earth's.
While passing through the outer Van Allen belts 4 times each orbit, and often through the South Atlantic Anomaly as well, led to a very high background, there were still long periods in each orbit in which cosmic gamma-ray events could be detected.
The interaction of this field with the solar wind causes an enormous toroidal system rather like the van Allen belts around the Earth.
VAN ALLEN, JAMES A.
James A. Van Allen was an American physicist who discovered doughnut-shaped belts of radiation that circle the Earth (the van Allen Belts).
Like the other gas giants, and Earth, the ringed planet has radiation belts similar to Earth's Van Allen belts, all the way through the 1.8 million kilometre extent of its magnetosphere.
Solar flares and cosmic rays also pose a problem, especially for instruments beyond the protective Van Allen belts.
Size. It is extremely expensive to launch objects into space. Using the Space Shuttle it is about US$20000 per kilogram.
This disrupts the flow of the solar wind, which is channelled around the magnetosphere. Material from the solar wind can 'leak' into the magnetosphere, causing aurorae and also populating the Van Allen Belts with ionised material.
This "radiation" is similar to, but much more intense than, that found within Earth's Van Allen belts. It would be immediately fatal to an unprotected human being.
The ions and electrons within the magnetosphere are a form of radiation 10,000 times more intense than Earth's deadly Van Allen belts.
At intermediate altitudes nearer the equator, the satellite passes through the Earth's trapped radiation, the Van Allen belts. Out of the polar ionosphere flows plasma into the magnetosphere.
 See also: Belts, Earth, Solar, Orbit, Sun
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