图 书 馆
把宇宙的碎片拼凑在一起Putting Together the Pieces of the Universe |
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| 课程网址: | http://ocw.uci.edu/lectures/putting_together_the_pieces_of_the_un... |
| 主讲教师: | James Bullock |
| 开课单位: | 加州大学尔湾分校 |
| 开课时间: | 2009-02-11 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | ״Putting Together the Pieces of the Universe." A lecture delivered by UCI Professor James Bullock on February 11, 2009. James Bullock, Associate Professor of Physics and Astronomy at UC Irvine, is part of a team of scientists who believe they have discovered the minimum mass for galaxies in the universe -- 10 million times the mass of the sun. This mass could be the smallest known "building block" of the mysterious, invisible substance called dark matter. Stars that form within these building blocks clump together and turn into galaxies. Dark matter governs the growth of structure in the universe. Without it, galaxies like our own Milky Way would not exist. Dark matter's gravity attracts normal matter and causes galaxies to form small galaxies and to merge to create larger galaxies. |
| 关 键 词: | 宇宙碎片; 暗物质; 无形物质 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-11-23：yxd |
| 阅读次数: | 58 |