Word: clusters
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That still isn't far enough out to give a direct measure of the Hubble-the cosmic rate of expansion. But M100 is part of a huge group of galaxies known as the Virgo cluster. The M100 calculation gave the astronomers the distance to Virgo, and they used that number in turn to estimate the distance to the Coma cluster of galaxies, about five times as far away. Coma, finally, is far enough out that it's a reliable indicator of the Hubble Constant. Based on Freedman's analysis, the Constant comes in at 80, indicating a universe between...
...brutal edge, marshaling the facts of the crime before attempting to pin them on the accused. But prosecutor Marcia Clark and her team chose to set the murder aside for the moment and instead cast their line far back into the past, calling to the stand a cluster of witnesses to events that happened six, even nine years ago, each one embellishing the picture of Simpson as a cruel and abusive spouse...
...language, were found to be genetically distinct, suggesting that three separate populations from Asia may have crossed the Bering Strait at different times to settle in America. The Amerind, who predominate in most of North and South America, possess only type O blood; among the Na-Dene, who cluster in Alaska, Canada and the U.S. Southwest, O prevails but A makes an appearance; in the Alaskan and Canadian Inuit (Eskimo), A, B, AB and O blood groups show the pattern seen in the rest of the world...
Russian bombers were supposed to target the Grozny television tower, the rail terminal, the presidential palace and a few military installations. But the air strikes went badly from the first, hitting residential buildings, dropping flesh-shredding cluster bombs and touching off a worldwide cry of outrage at the high civilian casualties. Some critics accused Yeltsin of trying to terrorize the Chechens with indiscriminate bombing, but military experts do not see it that way. "The bombing," says a U.S. Air Force officer, "doesn't look like terror as much as incompetence. A lot of them can't find the targets they...
...sure it's a scaling issue," said Susan Lewis, the director of the core program. "The same cluster phenomenon might occur...