The revised spacecraft objectives were to measure radiation in the outer Van Allen radiation belt using two Geiger-M�ller tubes and to test the trigger mechanism for a lunar photographic experiment.
42.
TWINS provides stereo imaging of the Earth's magnetosphere, the region surrounding the planet controlled by its magnetic field and containing the Van Allen radiation belts and other energetic charged particles.
43.
Solar wind peaks at close to 3, 000, 000 km / h-prolonged exposure to peak solar wind outside the protection of Van Allen radiation belt will increase a person's lifetime cancer risk.
44.
It's the Explorer program, a series of scientific missions that includes the United States'first satellite, Explorer 1, which was launched in 1958 ( and which discovered the Van Allen radiation belts ).
45.
He also testified that the then'world director'of Scientology L . Ron Hubbard'showed paranoid delusions in his claim to have visited Venus and been in the Van Allen radiation belt around the earth '.
46.
This will reduce the satellites'exposure to the Van Allen radiation belt, reduce the Doppler effect, increase satellite visibility from the ground, and allow the satellites to keep their antennas pointed at Earth during perigee.
47.
Under these conditions, the asteroid flyby could not yield useful results, so the spacecraft was put into a geocentric orbit passing through the Van Allen radiation belts to test the various components on board.
48.
While traveling through the outer Van Allen radiation belt, the spacecraft's scintillator made observations indicating that a small number of high energy ionized plasma emanating from the Sun and streaming through interplanetary space, were performed.
49.
The purpose of the unusual orbit is to place Chandra well above the Earth's Van Allen radiation belt, which would interfere with the space telescope's observations of X-ray emissions from black holes, colliding galaxies and stellar explosions.
50.
The Van Allen radiation belts were named after him, following their discovery by his Geiger M�ller tube instruments on the 1958 satellites : ( Explorer 1, Explorer 3, and Pioneer 3 ) during the International Geophysical Year.
