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Originally posted by David2012
LoL after seeing the vid of how they faked a halfway to the moon shot of the earth im highly in doubt we ever been there.
(also the van allen radiation belt is a big problem... lol in a later space shuttle mission were they went as far out as they could they started to have radiation effects.. that was like 300 miles out... let alone traversing the radiation belt to the moon 363000 km at the least of which 52000 km goes through that radiation belt)
Originally posted by untilted
why would (if genuine) astronaut in shuttle say (2:11): "... we still have an alien spacecraft under observance..."
he could say something like 'we have an object' or 'we have a bogey', but he said ALIEN SPACECRAFT!!!
The Earth actually has two radiation belts of different origins. The inner belt, the one discovered by Van Allen's Geiger counter, occupies a compact region above the equator (see drawing, which also includes the trajectories of two space probes) and is a by-product of cosmic radiation. It is populated by protons of energies in the 10-100 Mev range, which readily penetrate spacecraft and which can, on prolonged exposure, damage instruments and be a hazard to astronauts. Both manned and unmanned spaceflights tend to stay out of this region.
The outer radiation belt is nowadays seen as part of the plasma trapped in the magnetosphere. The name "radiation belt" is usually applied to the more energetic part of that plasma population, e.g. ions of about 1 Mev of energy (see energy units). The more numerous lower-energy particles are known as the "ring current", since they carry the current responsible for magnetic storms. Most of the ring current energy resides in the ions (typically, with 0.05 MeV) but energetic electrons can also be found.