| 书目名称 | Rare Earth | | 副标题 | Why Complex Life is | | 编辑 | Peter D. Ward,Donald Brownlee | | 视频video | | | 图书封面 |  | | 描述 | In November 12, 2002, Dr. John Chambers of the NASA Ames Research Center gave a seminar to the Astrobiology Group at the University of Washington. The audience of about 100 listened with rapt attention as Chambers described results from a computer study of how planetary systems form. The goal of his research was to answer a deceptively simple question: How often would newly forming planetary systems produce Earth-like planets, given a star the size of our own sun? By “Earth-like” Chambers meant a rocky planet with water on its surface, orbiting within a star’s “habitable zone. ” This not-too-hot and not-too-cold inner region, relatively close to the star, supports the presence of liquid water on a planet surface for hundreds of million of years—the time-span probably necessary for the evolution of life. To answer the question of just how many Earth-like planets might be spawned in such a planetary system, Chambers had spent thousands of hours running highly sophisticated modeling programs through arrays of powerful computers. The results presented at the meeting were startling. The simulations showed that rocky planets orbiting at the “right” distances from the central star are eas | | 出版日期 | Book 2000 | | 关键词 | Evolution; Universe; astrobiology; biology; stars | | 版次 | 1 | | doi | https://doi.org/10.1007/b97646 | | isbn_softcover | 978-0-387-95289-5 | | isbn_ebook | 978-0-387-21848-9 | | copyright | Springer-Verlag New York 2000 |
The information of publication is updating
|
|
发表于 2025-3-21 20:06:50
