Word: einstein
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Dates: during 2000-2009
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...Baby Einstein vs. Barbie Overscheduled kids. Overprotective parents. They're hot-button media issues, but are they really the problems faced by most American families...
...EINSTEIN'S GIANT LENS...
...they're just too faint for any telescope now in existence. But the universe itself has supplied a way of boosting a telescope's magnifying power. The theory of relativity says massive objects warp the space around them, diverting light rays from their original path. In the 1930s Albert Einstein realized this meant a star, say, could act as a lens, distorting and amplifying the light from something behind it. In practice, he said, it probably happens so rarely that we will never...
...Einstein was wrong. So-called gravitational lenses have become a major factor in modern astronomy. They have revealed, among other things, the existence of tiny planets around stars thousands of light-years away and have created weird optical effects, including multiple images of faraway quasars. If you look at a massive cluster of galaxies, Ellis figured, you might see amplified images of more distant galaxies, too faint to be seen otherwise. So a year or two ago, he started aiming the Keck at galactic clusters, and along with Stark, he identified six candidate objects. To make certain that these were...
...Albert Einstein suggested that gravity from a massive foreground object could distort and magnify background objects...