In the U.S., __ is the top prune-growing state. | |
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| Numbers Don't Lie |
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| Exposure time (in hours) of the 1827 Niépce Heliograph, the earliest surviving photo | 8 |
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| | Cost of a commercial U.S. photo portrait in the early 1860s (about $6–$60 today) | $0.25–$2.50 |
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| Pounds of fruit produced by a mature prune plum tree each year | 150-300 |
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| | Shelf life of unrefrigerated prunes (in months), with an additional six months if refrigerated | 6 |
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| Cameras from the Apollo space missions are still on the moon. |
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Documenting humankind's voyage into space has required astronauts to cart cameras outside Earth's atmosphere, but they haven't always returned. Cameras used during many of the Apollo missions are still on the moon five decades later, including one used by Neil Armstrong during the first moonwalk. Between 1961 and 1972, NASA crews prepared and sent into space bare-bones cameras, stripped down for efficiency and to reduce user error, but weight requirements for returning to Earth meant astronauts kept only the film, ditching the cameras to make room for moon rocks and other space samples. In 1969, NASA announced that its moon garbage heaps — which would eventually include 12 cameras — totaled about $1 million in abandoned equipment (about $8.1 million today). However, the film brought back to Earth from the Apollo missions captured 18,000 of our first glimpses into space. | |
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You might also like | 6 Table Etiquette Tips You Might Not Know | When we're eating at home, most of us don't have a large formally set dining table complete with multiple pieces of silverware and glassware. But at a fancy event, the rules may seem a little overwhelming. | |
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