A quick response to the soviet union s launch of sputnik 1 explorer 1 s success marked the beginning of the u s.
Explorer 1 satellite 1958.
On the occasion of explorer 1 s fiery reentry into earth s atmosphere university of iowa physicist james van allen who had designed the science instruments on board said of the pioneering satellite.
Explorer 1 was the first of the long running explorer program.
31 1958 at 10 48 p m.
The first united states satellite and space launch vehicle.
Explorer 1 became the first successfully launched satellite by the united states when it was sent to space on january 31 1958.
Explorer 1 s last transmission was received may 23 1958 although it remained in orbit until march 31 1970.
The satellite remained aloft for more than a decade before re entering earth s atmosphere on march 31 1970.
Est from cape canaveral florida after two days of launch delays due to high winds.
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Explorer 1 sent data back to earth for four months ceasing communications on may 23 1958.
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With the launch of sputnik 1 and 2 the previous concern the right of satellite overflight had become moot.
Four follow up satellites of the explorer series were launched by the juno 1 rocket in 1958 of these explorer 3 and 4 were successful while explorers 2 and 5 failed to reach orbit.
Explorer 1 nasa.
Explorer 1 was the first successful u s.
Army launched the explorer 1 satellite.
On january 31 1958 the u s.
It inspired an entire generation of young men and women in the united.
The final flight of the juno 1 booster the satellite beacon 1 also failed.
Explorer i officially known as satellite 1958 alpha was the first united states earth satellite and was sent aloft as part of the united states program for the international geophysical year 1957 1958.
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