Word: goddarde
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Rich and Swart then faced Brown's Argo and Kris Goddard in the doubles finals. Rich and Swart's attempt to complete a Crimson sweep of the finals fell short, however, as they lost in a close match...
Telling evidence of global warming, right? Not necessarily, climatologists quickly pointed out. Thanks to wind and waves, without any help at all from rising temperatures, fissures often form in the polar ice, especially in the warmer summer months. "In fact," says Claire Parkinson of NASA's Goddard Space Flight Center, whose satellites have long kept an eye on the polar ice cap, "it happens many, many times every year." Sometimes the openings can be hundreds of miles long, explains the Jet Propulsion Lab's Ronald Kwok, another Arctic observer...
...take a straightforward approach, hoping simply to eyeball the object through a telescope. But black holes, which are formed by collapsed stars or compressed matter at the center of galaxies, are so dense that nothing--not even light--can escape their gravity. Last week, however, investigators at NASA's Goddard Space Flight Center in Greenbelt, Md., announced that they had at last seen direct evidence of a black hole in action...
Until now, the best clues to the existence of a black hole were X-ray emissions from its accretion disk, the swirl of nearby matter that is steadily being pulled into the body. When the Goddard scientists looked at a suspected black hole in a galaxy 100 million light-years away, however, they saw X rays not being emitted but being absorbed--the signature of ionized iron gas being drawn directly into the maw of the hole. The scientists knew the gas was on the move because its X rays were redshifted, stretched as their speed increased so that they...
What impressed the research team was not just the fact that the gas was moving but how fast it was moving--6.5 million m.p.h., judging by the redshift. This is exactly the kind of searing speed a black hole ought to produce. While the Goddard scientists may not have the distinction of being the first to see a black hole itself, they are thus the first direct witnesses of its extraordinary power...