Archive topic
Unusual observations in astronomy, geology, physics and the environment, including cases resolved through careful measurement and replication.
Scientific Anomalies & Natural Phenomena
The Wow! signal was a one-time narrow-band radio event near the hydrogen line, recorded on 15 August 1977. Its shape was noteworthy; its source remains unconfirmed.
Scientific Anomalies & Natural Phenomena
N-rays were reported by respected physicists using faint visual changes near the threshold of perception. Failed replication and uncontrolled tests showed that the proposed radiation was not established.
Scientific Anomalies & Natural Phenomena
The Taos Hum became a public problem in the early 1990s when residents described a distant-engine sound. Researchers documented sincere reports but found no common external source.
Scientific Anomalies & Natural Phenomena
A 1908 blast over Siberia flattened forest without leaving a classic impact crater, making Tunguska a cornerstone case in anomaly, science and myth.
Scientific Anomalies & Natural Phenomena
A terrifying human experience sits at the crossroads of neurology, folklore, bedroom architecture and belief.