But what are the mysterious Hessdalen glowing lights in Norway?
UFO? Weather balloon? Seismic related light?
Since the 1980s, a strange phenomenon has been witnessed by thousands of people in the Hessdalen Valley in Norway.
Strange lights, moving at incredible speed along the ground or high in the sky, have been photographed, videoed and tracked with radar.
A permanent research project is even based on the site. But even after all this, no one actually knows what the Hessdalen lights are, or what causes them.
The Hessdalen Lights are unexplained lights usually seen in the valley of Hessdalen, Norway. These lights are well known and have been recorded and studied by physicists from around the world.
One explanation attributes the phenomenon to an incompletely understood combustion process in the air involving clouds of dust from the valley floor containing scandium. Some sightings, though, have been identified as misperceptions of astronomical bodies, aircraft, car headlights, and mirages.
Can increasing seismic pressure on tectonic plates create light?
Scientists say the Hassdalen phenomenon is anything but supernatural and is likely one more sign pointing to increasing seismic pressures on tectonic plates.
They argue that the enormous energies built up in tectonic strain, even without actual release in earthquakes, were sufficient to produce glowing, ionized, light-forms in the atmosphere above such areas.
Bodies of water, especially reservoirs, could also produce strain on underlying geology.
Over subsequent years, Canadian scientist Michael Persinger and the US geologist John Derr, together and individually, examined specific “windows” of recurring reported light phenomena, and amassed an impressive body of data to support this “tectonic strain” theory.