At these cold temperatures, water vapor at low altitudes freezes out to form ice-crystal clouds now seen in abundance by Hubble.
(water vapor at low altitudes; freezes out; to form ice-crystal clouds; L:At these cold temperatures) (ice-crystal clouds; seen; L:in abundance; by Hubble; T:now)
water vapor at low altitudes ice-crystal clouds
freezes out seen
to form ice-crystal clouds L:At these cold temperatures
L:in abundance by Hubble T:now