Word: outer
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Dates: during 1980-1989
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...stars, dust, gas and, perhaps, planets -- offer a unique glimpse far back into time and provide clues to the age of the universe. As Physicist Stephen Hawking has observed: "When we look at the universe, we are seeing it as it was in the past." In those galactic outer reaches, too, lies hidden the answer to a tantalizing mystery: How soon after the cataclysmic fireball of the big bang, from which the universe presumably emerged, did the galaxies form...
...which friends or teachers tacitly condone a pervasive drug culture. Bush, with much prompting from an officious young director of the program, is to enact a teacher's concern for a student who has been nodding off in class. The Vice President, casting his eyes uncertainly to the outer ring of reporters, asks what the other "students" will be doing while he approaches the woman teacher playing the student's role. "They will probably be listening," the director responds. The point is to demonstrate awareness of what is going on, to break the unvoiced conspiracy of acceptance. Bush...
Twenty days later, the blue-white earth has shrunk to a bright dot of light against the background of stars in the eternal night of outer space. Looking back, the crew members are filled with a sense of isolation, a feeling that will never quite leave them during the 280-day outbound leg of their journey. A busy schedule provides some distraction. The space travelers perform scientific experiments, practice taking shelter against solar-flare radiation, tend vegetables in their hydroponic greenhouses, exercise vigorously for several hours each day and tap into digital libraries for music, light reading matter and courses...
...barrier of the skin, overcome by the natural pesticides in sweat, saliva and tears, dissolved by stomach acids or trapped in the sticky mucus of the nose or throat before being expelled by a sneeze or a cough. But the organisms are extraordinarily persistent, and some occasionally breach the outer defenses. After entering the bloodstream and tissues, they multiply at an alarming rate and begin destroying vital body cells...
...antibodies, but the free lunch is over quickly. While the B cells are being activated, other helper T cells have been creating an army of killer T cells. These killers recognize the flu-ridden cells because, like macrophages, infected cells display a bit of viral antigen on their outer membranes. Says Coffman: "For many viral infections, the most important response is the killer T cell. Viruses live inside cells, so it's essential to kill not only the viruses themselves but those cells that are infected with the virus...