单词：globular aggregate
单词：globular aggregate 相关文章
Iraq has reacted defiantly to the American and British air raids on targets near Baghdad. President Sadam Hussein vowed to fight until victory on land, in the air and at sea. China and Russia have als
疯狂英语2001年
We are traveling upwards away from our solar system, out of the spiral arms of the Milky Way. In front of us, lie vast clusters of stars, satellite groups that orbit the heart of our galaxy. These are globular clusters, over 150 have been discovered.
自然百科2011年
Measuring the brightnesses and colors of the stars in the globular cluster, we can figure out how old they are. Here is the remarkable thing: they are very old. Globular clusters, at least the stars in the globular clusters, in many cases, are almost
自然百科2011年
One of the puzzles about our galaxy is that we know that it's had stars forming continuously for about the last ten billion years. But at the rate/ it's eating up its gas now, it's forming new stars, it should burn out that gas soon, should run out o
自然百科2011年
But if you look carefully, stars aren't spread smoothly across the whole sky. They are gathered together into a band that loops around the sky which we call the Milky Way. That bright strip across the sky with its extraordinary abundance of stars and
探索与发现2013年
BEIJING, Feb. 22 (Xinhua) -- Chinese brokerage firms saw surging profits in 2014 boosted by easing measures from policymakers, the Securities Association of China (SAC) said. Combined net profits of 120 brokerage firms totaled 96.55 billion yuan (15.
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