Here's a charming video of the Hessdalen Lights (of Norway) presented by National Geographic Televison.
These sorts of UFO phenomena rank in the "lights indigenous to specific place" category, and appear year after year. They are routinely studied by automated equipment placed in situ
, and periodically by visiting teams of scientists. Other than that they are energetic plasma, little is known.
One recent hypothesis suggests that the lights are formed by a cluster of macroscopic Coulomb crystals in a plasma produced by the ionization of air and dust by Alpha particles during radon decay in the dusty atmosphere. Several physical properties (oscillation, geometric structure, and light spectrum) observed in Hessdalen lights phenomenon can be explained through the dust plasma model. Radon decay produces alpha particles (responsible by helium emissions in HL spectrum) and radioactive elements such as polonium. In 2004, Teodorani showed an occurrence where a higher level of radioactivity on rocks was detected near the area where a large light ball was reported. In fact, when radon is released into air, its solid decay products readily attach to airborne dust. A new computer simulation shows that dust immersed in ionized gas (i.e., dusty plasmas) can organize itself into double helixes. The simulations suggested that under conditions commonly found in space, the dust particles first form a cylindrical structure that sometimes evolved into helical structures. Along some spirals, the radius of the helix was seen to change abruptly from one value to another and then back again, providing a mechanism for storing information in terms of the length and radius of a section of a spiral. Hessdalen Lights may take the helical structure. Surprisingly, dusty plasmas may also assume this structure.
Periodic efforts have been made to create inorganic life from dusty plasmas in terrestrial laboratories.