Explorers Program: Difference between revisions

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| Planned to measure Earth's radiation balance, but destroyed within seconds by range safety<ref>{{cite web |url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=EXP-7X |title=NASA - NSSDCA - Spacecraft |publisher=National Space Science Data Center |access-date=2018-04-20}} {{PD-notice}}</ref>
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