Science

Earthmen first sent a spacecraft to which planet?

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What does a ruler measure?
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What satellite series was known as "fellow traveler"?
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The Hubble Space Telescope was deployed on which Space Shuttle in 1990?
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What cellular structure found in the nucleus helps in protein formation?
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During the seventeen hundreds, what creature was thought to excrete blood through its skin?
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Which is the virus that causes stunted growth and brown patches on tobacco plants?
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What is matter that doesn't allow light to pass through called?
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How far does a car moving at 60 miles per hour cover in one second?
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