Two papers authored by astronomer Beatriz Villarroel claim to show that thousands of “transients” in historic astronomical ...

A new study analyzing historical photographs taken by the Palomar Observatory between 1949 and 1957 has detected several ...

Researchers poured over historical photographs in search of "transients"—short-lived flashes of light of the night sky.

Data show that unidentified lights in archival astronomy images were 68% more likely to be imaged 24 hours after a nuclear ...

Mysterious lights and reports of unidentified anomalous phenomena (UAPs) in the 1940s and 1950s appear to be somehow linked ...

That’s exactly what researchers at the Vanishing and Appearing Sources during a Century of Observations project (VASCO) are ...

Idaho, a state known for its picturesque landscapes, has recently been drawing attention for a different reason: strange sky ...

Two new papers delve into mysterious lights and objects that were observed in the sky years before the first satellite ...

A photographer in New Zealand captured a once-in-a-lifetime celestial scene that blended multiple rare sky phenomena into one ...

For those of you who like interesting night sky phenomena, there are actually two comets that are visible right now. Comet ...