-=-=-=- 以下内容由 心海星河 在 2006年10月08日 03:46pm 时添加 -=-=-=-
知道本论坛上有些道友鸟语颇好，有兴趣可以去nasa的网站看详细介绍。
http://antwrp.gsfc.nasa.gov/apod/ap061008.html
Our Earth is not at rest. The Earth moves around the Sun. The Sun orbits the center of the Milky Way Galaxy. The Milky Way Galaxy orbits in the Local Group of Galaxies. The Local Group falls toward the Virgo Cluster of Galaxies. But these speeds are less than the speed that all of these objects together move relative to the cosmic microwave background radiation (CMBR). In the above all-sky map from the COBE satellite, radiation in the Earth';s direction of motion appears blueshifted and hence hotter, while radiation on the opposite side of the sky is redshifted and colder. The map indicates that the Local Group moves at about 600 kilometers per second relative to this primordial radiation. This high speed was initially unexpected and its magnitude is still unexplained. Why are we moving so fast? What is out there?作者: 我既为神 时间: 2006-10-10 19:46 标题: [灌水]偶然瞧见一幅图 宇宙就这么个球么。。
