本帖最后由 gohomeman1 于 2009-3-30 23:45 编辑
首先声明，我无意每天都来翻译APOD官网的英文。但最近几天成大、北京天文馆都不翻译了，也不知道是否存在版权原因（如果这样是否以后链接都是问题了？）。这2天先翻译了再说。诸君若有手痒愿意代笔的，那就太好了，我先谢了！
http://apod.nasa.gov/apod/astropix.html
2009 March 29
Signals of a Strange Universe
陌生宇宙的信号
Credit: High-Z Supernova Search Team, HST, NASA
Explanation:
Eleven years ago results were first presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. In the language of cosmologists, a large cosmological constant is directly implied by new distant supernovae observations. Suggestions of a cosmological constant (lambda) were not new -- they have existed since the advent of modern relativistic cosmology. Such claims were not usually popular with astronomers, though, because lambda is so unlike known universe components, because lambda's value appeared limited by other observations, and because less- strange cosmologies without lambda had previously done well in explaining the data. What is noteworthy here is the seemingly direct and reliable method ofthe observations and the good reputations of the scientists conductingthe investigations.
11年前，关于我们宇宙的一项研究结果被首次公布：宇宙中的大部分能量不是在恒星和星系中，而是在宇宙空间本身。按宇宙学家的说法，较大的宇宙常数（的确立）直接与遥远超新星的新观测相关。宇宙常数（λ）并不是一个新概念——它是与现代相对论宇宙学共存的（本身就是爱因斯坦相对论宇宙学的一部分，为了使场方程式平衡而引入的，当然对此的争议可从没停止过——译注）。当然，这个大宇宙常数的主张并没有很受欢迎。因为λ（对应的宇宙）与我们现在的宇宙是如此格格不入；因为我们其他观测到的数据中λ所起的作用是如此的小；更因为——没有λ常数的弱—奇异宇宙学可以完善的解析观测数据。这里值得注意的是直接的可靠的观测方法和天文学家调查研究的良好名声。（最后一句不知所云，而且9年前原句就是这样——译注）
Over the past eleven years, independent teams of astronomers have continued to accumulate data that appears to confirm the existence of dark energy and the unsettling result of a presently accelerating universe. The above picture of a supernova that occurred in 1994 on the outskirts of a spiral galaxy was taken by one of these collaborations.
11年来，天文学家中的独立研究团队们持续的积累观测材料，企图确定暗能量的存在性和当前加速膨胀宇宙的未来令人不安的结果。上图就是取自那些合作中的一幅图，显示了1994爆发的一个超新星，该超新星位于一个涡旋星系的外围区域。
PS：本文晦涩难懂。APOD本身在炒冷饭，这篇文章显然不是第一次发布。希望我的翻译没给大家造成更多困惑——gohomeman1 |
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