The Hessdalen Lights

Since the early 1980s, residents of the Hessdalen valley in central Norway have reported anomalous lights — sometimes stationary for hours, sometimes pulsing or moving at speed. Project Hessdalen, a permanent automated observation station operated by Østfold University College in cooperation with Italian astrophysicists, has continuously recorded the phenomenon since 1984. The phenomenon is real and unexplained; no single hypothesis (combusting dust, piezoelectric effects, plasma) has accounted for the full range of observations.