Chromaffin cell. Chromaffin cells, also pheochromocytes, are neuroendocrine cells found mostly in the medulla of the adrenal glands (located above the kidneys) in mammals.
The Moon has no appreciable atmosphere. The sky is always black and the radiation from the Sun strikes with full force on the surface of the Moon. The lack of atmosphere produces temperature extremes on the Moon that range from -250 degrees F in the dark to +250 degrees F in the light.
Of the known moons in the solar system, four have been found to have atmospheres: Jupiter's volcanically active moon Io (tenuous sulfur dioxide), Jupiter's ice-coated moon Europa (tenuous oxygen), Saturn's largest moon Titan (dense nitrogen and methane), and Neptune's largest moon Triton (tenuous nitrogen and methane).