Assertion: solar system's object | /r/HasProperty | sent into space
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Source sentences:
text: The first artificial object sent into space was the Soviet satellite Sputnik 1, which was launched in space in 1957, successfully orbited the Earth for months, and collected information on the density of the upper atmosphere and the ionosphere.
text: The first artificial object sent into space was the Soviet satellite Sputnik 1, launched in 1957, which successfully orbited Earth until 4 January the following year.