This week 30 years ago

日期:2019-02-28 06:01:07 作者:呼延鹨 阅读:

Viking lands on Mars After two weeks of searching for a suitable landing site, Jim Martin, Viking’s project manager, finally gave the command for the lander to separate from the orbiter and descend to the surface of Mars, precisely on schedule. An almost perfect descent followed, with final touchdown on the Martian surface, two miles below the mean level of Mars. The landing was in the western part of Chryse Planitia. The smooth plain was selected on the basis of radar observations and site survey photographs taken from orbit. One of the lowest areas of Mars,