Terms for subject Mathematics containing the upper atmosphere

English	Russian
enter the upper atmosphere	входить в верхние слои атмосферы
many of the quantities to be measured in the upper atmosphere are highly variable in time and space	величины
the upper atmosphere emits light of two kinds, but neither of them is visible	ни один из двух
these fragments are what we observe at upper levels of the atmosphere	на верхнем уровне