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Isaac Newton described three basic laws of motion
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Isaac Newton built the first reflective telescope
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First Dutch telescope made
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Cold War lasted from the end of world war ll.
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USSR launched Sputnik
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Soviets launched Sputnik 2
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Explorer 1 was launched
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Vanguard 1 was launched
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A soviet cosmonaut became the first human in space and in orbit.
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The first American in orbit was John Glenn
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Skylab was launched
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The Hubble space telescope was the best telescope it was put into orbit in 1990 by space shuttle
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A space shuttle challenger disintegrated a small piece of insulating foam broke off the fuel tank.
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Two rovers spirit and opportunity landed on Mars
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Spirit sent back data until it was stuck