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this is a report on the United States

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space exploration of 1958 1958 has seen

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notable progress in the space effort of

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the United States why us satellites have

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gone into warming to space probes were

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launched burst in October travelled

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about 70 1300 miles and the second in

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December ascended sixty three thousand

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five hundred eighty miles above the

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earth here is the story of these

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on January 31st the United States Army

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was ready to launch a jupiter-c missile

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with a satellite payload 80 days before

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Clarence had been given to proceed with

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the launch the army selected the Jupiter

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see because of its proven reliability

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the California Institute of Technology's

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Jet Propulsion Laboratory now under

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contract to na sa designed and

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manufactured the advanced stages and the

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payload the payload transmitters would

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have an expected broadcast life of two

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weeks for the 60 milliwatt transmitter

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and two months for the one putting out

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ten milliwatts the payload measured 80

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inches by 6 inches and weighed 30 and

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eight tenths pounds each component in

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it was thought that centrifugal force

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might distort the structure of the solid

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propellant within the high-speed rocket

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motor it too was subjected to spin

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attention all personnel please clear the

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launching area for radio frequency

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interference status please clear the

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launching area this is rayne command

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transmitter on hello neuron frequency

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measures 2.5 low-calorie i drove a pond

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here all this projects demand the time

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is now ex-wife 33 minutes authorized

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personnel may resume work on that resume

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working all clear the water carries all

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clear the area the signal is 2.5 de lo

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channel one is now reset channel two is

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reset channel 3 is reset to figure 4

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channel 1 is 4 30 channel 4 reset

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channel 5 this is project to land the

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time is nigh

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start vibration wrecker begins cluster

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run McCluster is starting its spin

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transmission of all payload electronics

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after the firing signal is given it will

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take almost 16 seconds for the vehicle

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to take off pressurization will be

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started at X plus 3 seconds at X plus 14

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seconds ignition will begin trust

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build-up will continue until liftoff at

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about X plus 16 seconds firing a needle

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one piercing provider egg minus 30

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seconds close baby circulated recordings

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on silent excellent ten nine eight seven

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six five four three two one zero

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the launching was a success and the

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first United States satellite was named

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explorer 1 explorer 1 made the most

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important discovery of the International

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Geophysical Year the existence of a

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great belt of radiation identified by

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dr. James a van allen head of the State

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University of Iowa physics department on

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March seventeenth st. Patrick's Day dr.

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john p hagen of the Naval Research

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Laboratory announced that Vanguard was

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poised and ready to launch from the

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Atlantic Missile Range Cape Canaveral

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vanguard 1 and earth satellite was

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placed into orbit with a perigee of 409

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miles as its closest approach to the

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earth and an apogee of 2453 miles from

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the earth it is expected to stay in

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orbit for hundreds of years it's solar

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batteries will power transmitters which

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will give information to generations of

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scientists of the world community

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information gained from Vanguard one has

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enabled us to determine the true shape

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Explorer 3 launched nine days after

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vanguard one achieved orbit and yielded

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valuable data on the radiation belt

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discovered by Explorer 1 it recorded

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micro meteor impact which gave

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information about the density of cosmic

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dust and it recorded internal and

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external temperatures of the satellite

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the next United States success in space

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came with the launching into orbit of

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explorer for on July 26 1958 as a

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scientific experiment it confirmed and

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expanded the data on radiation and

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temperatures discovered by satellite

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explorer 1 and 3 on March 27 the

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Advanced Research Project agency

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directed the space technology

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laboratories to proceed with a series of

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lunar probes the payload was designed so

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that its electrical system would have

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maximum possible life the experiments

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aside from an electric scanner would

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measure radiation magnetic fields of

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Earth and Moon density of micro meteoric

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matter and internal temperatures these

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probes would use hardware developed for

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the Air Force ballistic missile division

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as advanced re-entry vehicles the first

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stage for develops a sea-level thrust of

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150,000 pounds

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to vernier engines rated at 1,000 pounds

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of thrust provide roll control and final

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adjustment of burnout velocity the

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second stage was a modified Vanguard

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second stage with a gimballed

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regenerative lee cooled thrust chamber

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it had roll control and a separation