Index with graphics and illustrations about stars , the solar system , cosmology and galileo -天文学基础知识,天象预报,星历表和天文相关软件下载。
Due to the complexity of the calendars , detailed explanations of the course format and a calendar key are provided prior to the presentation of the calendars 由于行事历有些复杂，详细相关课程格式与行事历关键字，说明于行事历表之前。
The orientation information of the sun , the moon and the earth , together with ephemeris are utilized to develop autonomous navigation algorithm , as well as its realization by dsp hardware 在小样本观测数据情况下,研究利用日地月方位信息和日月星历表进行航天器自主导航以及利用dsp实现航天器自主导航器的技术。
The website will initially serve to introduce the expert group and its initiatives to the growing internet community and to facilitate the publishing of a calendar of events and national contact points , as well as to provide easy access to the best practices guide 该网站初步旨在向与日俱长的互联网使用者，介绍专家小组及其首创精神，编列事件历表与国际连络点名单，并以浅易方式，简介最佳实践指南。
