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Bookmark or Share- Names and Definition of the Aurora | Geophysical InstituteThe Northern Lights and the aurora borealis are two names for the same thing. The term aurora borealis was first used by Galileo in 1619 to suggest the likeness of the northern lights to an early dawn in the northern sky, an appearance it sometimes has to those who live at low or intermediate latitudes in the northern hemisphere.
- Unusual Events in the Sky - Geophysical InstituteFireball meteors, auroras, noctilucent clouds, mirage phenomena, atmospheric dust, city lights reflected from clouds, earthquake lights, lightning, forest fires, ice crystals and raindrops in the air, plus a host of other phenomena can create strange effects.
- Fata Morgana - Geophysical InstituteThe fate morgana mirage is one that can occur only where there are alternating warm and cold layers of air near the ground or water surface. Instead of traveling straight through these layers, light is bent towards the colder, hence denser, air. The result can be a rather complicated light path and a strange image of a distant object.
- Pingos Pop Up in Alaska's North Country | Geophysical InstituteAlaska Science Forum article has no image, a placeholder has taken its place. Icon Attribution: Newspaper by Alexandria Eddings from the Noun Project
- Arctic Mirage (Hillingar) - Geophysical InstituteIn the arctic mirage a distant object appears right way up but higher up than the actual location. Though arctic and desert mirages seem to be quite different, they share a common fundamental cause. It is that light rays passing from an object through air to an observer always refract (bend) in the direction of increasing air density.
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