Mercury: Planet of Fire and Ice
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Mercury: Planet of Fire and Ice
Mercury’s Exosphere: Mercury’s atmosphere, really an exosphere, is tenuous: The total mass of all known constituents is approximately 15 orders of magnitude less than Earth’s. An exosphere is an atmosphere that has such a low density that collisions between constituents are negligible. Thus, according to Smyth and Marconi, “Mercury has multiatmospheres, with each separate atmosphere forming ind...
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تاریخ انتشار 1997