二十世纪二十年代，天文学家哈勃利用仪器观察星系发出的光，发现星系的光谱向长波方向偏移，称之为谱线“______”，此现象

解题思路：哈勃发现了谱线的红移现象，说明星系在远离我们而去．

二十世纪二十年代，天文学家 哈勃利用仪器观察星系发出的光，发现星系的光谱向长波方向偏移，称之为谱线“红移”，此现象说明星系在远离我们而去．
故本题答案为：哈勃；红移．

点评：
本题考点： 人类探究太阳系及宇宙的历程．

考点点评： 本题考查了哈勃的贡献，为了纪念他，1990年，人类发射的太空望远镜命名为“哈勃”望远镜．

二十世纪二十年代，天文学家 哈勃利用仪器观察星系发出的光，发现星系的光谱向长波方向偏移，称之为谱线“红移”，此现象说明星系在远离我们而去．
故本题答案为：哈勃；红移．

Characteristic value and characteristic vector of matrix occupied the position of very importance in the knowledge theory system of matrix.From 20's in 20th century put forward to be apart from for 100 the middle of the years now, it is in the algebra, several what, analytical, all lead, diagram theory, astronomy, physics, chemistry, economy, manage realms, such as science and social science...etc. have already acquired an extensive application.The thesis made a show of to make use of simple rank matrix of its theory in elaborating a matrix characteristic value and the basic concept of the characteristic vector and the foundation of the solution method and an of calculation.And pass the kinds model in growth model and ecology of the economy development and the pollution of the environment in the economics of analysis, made a show of the process that it builds up in mathematics model in, not only can make mathematics describe Chien clearly concise, and can make mathematics operate simple and direct wait a characteristics quickly clearly.At the same time, characteristic value and characteristic vector of matrix pierced through many important aspects of Gao Deng's algebra.Can deepen the understanding to Gao Deng's algebra each part to the research of the topic, can deeper geography solution and control the related theory of Gao Deng's algebra.

哈勃；红移

1920年到1929年

解题思路：知道哈勃发现了谱线的红移现象，说明星系在远离我们而去．

二十世纪二十年代，天文学家哈勃利用仪器观察星系发出的光，发现星系的光谱向长波方向偏移，称之为谱线“红移现象”，此现象说明星系在远离我们而去．
故本题答案为：红移现象；远离．

点评：
本题考点： 人类探究太阳系及宇宙的历程．

考点点评： 本题考查了哈勃的贡献，为了纪念他，1990年，人类发射的太空望远镜命名为“哈勃”望远镜．