单词:Globulariaceae
单词:Globulariaceae 相关文章
HEALTH REPORT -July 3, 2002: Sudden Cardiac Death By Nancy Steinbach This is the VOA Special English Health Report. An American professional baseball player, Darryl Kile, died recently. He was thirty
By Mike O'Sullivan Los Angeles 17 April 2006 The mariachi music of Mexico is flourishing in the United States, where Mexican-American youngsters are keeping alive the sounds of their homeland. A three
By Jeff Swicord Washington, DC 19 September 2006 watch Iranian Artifact Suit It is a case that has victims of a terrorist bombing seeking restitution from a U.S. museum, and the U.S. State Department and the government of Iran on the same side. Jeff
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.
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
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
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
cyberchondriac的意思是上网自诊狂,靠网上搜集的医学知识来断症,甚至质疑医生的诊断。然而,网上资讯浩瀚如海,互相贯连、无限引伸,例如在查阅头痛和出红疹的根源时,互联网都可以连结