Word: offs
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Dates: during 1970-1979
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Estimates of how much oil could be tapped off Alaska's entire outer continental shelf (OCS), including the Beaufort Sea, range up to 25 billion bbl., or nearly three times the reserves in Alaska's Prudhoe Bay field. Some oilmen believe that with a big development effort, Alaska...
"Peace is not an abstract. It means a better life for people. We have shaken off prejudice. Now we must destroy poverty, ignorance, hunger."
When Halley's Comet last streaked across the skies in 1910, it was for many an unwelcome visitor. Fearful that the earth would be enveloped by deadly gases in its glowing tail, people bought comet pills to ward off its effects, and held end-of-the-world gatherings. In...
The ion engine is far more economical. With electricity generated by solar panels, it strips electrons off the atoms of vaporized mercury passing through a coffee-can-like chamber, converting them to ions. Expelled at high speeds in a focused beam, the charged particles act like a rocket exhaust, propelling...
If Congress provides the needed funding, the probe will be carried into earth orbit by the space shuttle in the summer of 1985. Boosted by a conventional rocket, it will fly off toward the comet, gradually accelerated by its cluster of six or eight small ion engines, during the four...