Word: hydrogenating
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Using powerful new tools, biologists at the University of Chicago have gently sliced through a red blood cell to peer at individual protein molecules clinging to its inner membrane. At the California Institute of Technology, chemists have watched in wonder as a hydrogen atom romances an oxygen away from a carbon dioxide molecule. And at Stanford University, physicist Steven Chu has mastered techniques for levitating millions of sodium atoms inside a stainless-steel canister and releasing them all at once in luminescent fountains. Of late, Chu and his colleagues have amused themselves by stretching a double-stranded DNA molecule...
...apparent victim of that policy is FORREST MCCARTNEY, director of the Kennedy Space Center, who was forced out last month after he twice refused to approve a final "go for launch" because of safety concerns. Both flights went smoothly after the problems were fixed -- in one case a hydrogen-fuel leak and in another a warped hinge and latch. William Lenoir, a former astronaut and top NASA official, insisted that McCartney had to go. NASA administrator and former astronaut Richard Truly concurred and offered McCartney a desk job at Washington headquarters. But McCartney has quit, to look...
...Self-Reproducing robots would arrive in spaceships fueled by hydrogen bombs, traveling at 6.7 million miles per hour--1/100 the speed of light. * We would know they were here because they would want it that way. Their mission, after all, would probably be the search for a colony a safe distance from their own planet, sure to burn up in their sun's imminent supernova death. They would be obvious--maybe landing their probe, for instance, on the White House lawn--and they would be everywhere. They would appear not just on Earth, but in every solar system...
Some searchers, including Horowitz, have suggested that there are "magic frequencies," common frequencies which would be likely to be used by extraterrestrials eager to communicate. One of these is 1420 megahertz, which is the neutral hydrogen frequency. As Arnold explains, "No matter where you are in the universe, you'll know about hydrogen. Even if you have four eyes...
These distances, of course, would be shortened more by inevitable advances in rocket technology as nuclear pulse rockets, which have been studied recently by the British Astronomical Society. Tippler describes these as, "roughly speaking, rockets which have hydrogen bombs dropped out the rear instead of chemical fuel...