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First military liquid-fueled rocket engines were developed
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First vehicle to cross the Kármán line (100 km/~62 mi above the Earth's surface) or in other words; enter outer space
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First U.S.-designed rocket to make it to the outer edge of space
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First pictures of earth from 105 km (65 mi) away
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First signs or signals from space
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First rocket to make it into Earth’s orbit
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First satellite to actually reach the Moon
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First picture of Earth from it’s orbit
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First time making it into another world, the Moon
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First pictures of far side of the Moon that we don’t ever see
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First time making it to the asteroid belt and leave the inner solar system
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First spacecraft to make it past or beyond the orbit of Neptune
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First time going into the atmosphere of the gas giant: Jupiter
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First time landing on an asteroid
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First time going into the orbit of Saturn