With infrequent visits , comet kiess can ' t build up a broad dust band , and only generates a narrow trail of debris each time 由于琪斯彗星很少光臨,它無法形成一條寬闊的塵埃帶,而每次只能產(chǎn)生一條狹窄的由碎片組成的彗尾。
All dust storms on mars , no matter what size , are powered by sunshine . solar heating warms the martian atmosphere and causes the air to move , lifting dust off the ground 不管規(guī)模大小的火星塵暴,其動(dòng)力都是太陽光。太陽照射使火星大氣升溫,引起空氣流動(dòng),并將塵埃帶離地面。