Word: hydrogens
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SPACE CENTER, Houston--A problem with a hydrogen tank aboard the Space Shuttle Discovery forced its astronauts to conserve energy yesterday and threatened to shorten the mission, but Mission Control said there was no threat to the crew...
...problem was an erratic pressure reading on one of three liquid hydrogen tanks. The tank was taken out of service while engineers studied the problem...
...hydrogen is combined with oxygen in fuel cells to produce electricity for the shuttle systems, with water as a byproduct...
Plus a course in the politics of southern Africa (professor: Assistant Secretary of State for African Affairs Chester Crocker), a tutorial on neoconservative thought (professor: Irving Kristol of the American Enterprise Institute), and a briefing on the Strategic Defense Initiative (Star Wars) by Edward Teller, the father of the hydrogen bomb. And all for just one pupil: Vice President J. Danforth Quayle...
Kirshner says one important reason to analyze these phenomena is because they are theorized to be the source of all heavy elements in the universe. When the stellar explosion takes place, it fuses all of the star's abudant light elements, like hydrogen and helium, into heavy elements, like iron. "There is a real sense that supernova elements are actually the physical origin of [the heavy] chemicals in our body," Kirshner says. The elements these supernovae create are in everything, he says, including "life, earth, iron and gold...