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The Van Allen radiation belt is a zone ... in which region radiation levels vary. The belts are in the ... transient belt has been explained as due to a 'trapping' by ...
The South Atlantic Anomaly (SAA) is an area where Earth's inner Van Allen radiation belt comes closest to Earth's surface, dipping down to an altitude of 200 kilometres (120 mi). This leads to an increased flux of energetic particles in this region and exposes orbiting satellites (including the ISS) to higher-than-usual levels of ionizing ...
The Van Allen radiation belts swell and shrink over time as part of a much larger space weather system driven by energy and material that erupt off the Sun's surface and fill the entire Solar System. Space weather is the source of aurora that shimmer in the night sky, but it also can disrupt satellites, cause power grid failures and disrupt GPS ...
There are also two concentric tire-shaped regions, called the Van Allen radiation belts, with high-energy ions (energies from 0.1 to 10 MeV). The inner belt is 1–2 Earth radii out while the outer belt is at 4–7 Earth radii.
This will expose them to higher levels of radiation than astronauts aboard the International Space Station. An artist's concept of the Van Allen belts with a cutaway section of the two giant ...
Clickable image, highlighting medium altitude orbits around Earth, [a] from Low Earth to the lowest High Earth orbit (geostationary orbit and its graveyard orbit, at one ninth of the Moon's orbital distance), [b] with the Van Allen radiation belts and the Earth to scale To-scale diagram of low, medium, and high Earth orbits Space of Medium Earth orbits (MEO) as pink area, with Earth and the ...
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They were placed in orbits of 118,000 km (73,000 miles) [1] to avoid [2] particle radiation trapped in the Van Allen radiation belts. Their apogee was about one-third of the distance to the Moon . The first Vela Hotel pair was launched on 17 October 1963, [ 3 ] one week after the Partial Test Ban Treaty went into effect, and the last in 1965.