The Sad Science of 'Batty Boffins' - Moon Dust

The Earth has an ionosphere caused by ultra violet rays breaking apart atoms of air, ionising it. The Moon does not have an atmosphere and so should not have an ionosphere, but it does. It was discovered that ultra violet rays were acting on grains of dust ionising them, and the Moon is a very dusty place.
The Moon does actually have a very thin atmosphere caused by gases escaping from rocks.

The work above is a work of fiction. All characters appearing in this work are fictitious. Any similarity between any entity depicted in this work and real entities, living or dead, past or present, is purely coincidental.

Moon Dust

Moon Dust is caused by the weathering of the lunar rocks over a significant period of time. Meteorite impact and solar radiation cause the rocks to fracture and crumble into smaller and smaller fragments to create huge dust bowls on the surface of the Moon, that rival even the best efforts of the American mid-west farmers of the early 20th century. The dust is thought to be repelled from the surface by particles ionized by radiation from the sun. The dust can travel anywhere from a few meters to kilometers into the atmosphere, where it falls again under the influence of gravity. This gives the Moon a thin but tangible atmosphere. Radiation from the Sun hits this atmospheric dust, ionizing it and thereby creating an ionosphere.

There have been confirmed sightings of colour events on the Moon. These are thought to be caused by surface material or surface gasses being excited by solar radiation and emitting red coloured light, or by gasses escaping from beneath the surface of the Moon.

Moon dust has been brought back to Earth by the Apollo missions. The dust has been studied to evaluate its mechanical properties for use in construction on the Moon. It is also being studied to identify possible problems it might create if a colony is established on the Moon; it may erode seals and building materials, it may contaminate the air the colonists breath and it may coat the buildings and affect their heat absorption rates causing the buildings to warm up to an unacceptable level for instance.