Mt. Hood and a Lenticular Cloud

Explanation: What kind of cloud is next to that mountain? A lenticular . This type of cloud forms in air that passes over a mountain, rises up again, and cools past the dew point -- so what molecular water carried in the air condenses into droplets. The layered nature of some lenticular clouds may make them appear, to some, as large alien spaceships . In this case, the mountain pictured is Mt. Hood located in Oregon , USA . Lenticular clouds can only form when conditions are right -- for example this is first time this astrophotographer has seen a lenticular cloud at night near Mt. Hood. The above image was taken in mid-March about two hours before dawn.