A new Washington Post investigation reveals where climate change has supercharged the movement of moisture through the skies.

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

November has already witnessed the full moon and a meteor shower. More is on the way in the coming weeks of this month.

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

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

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

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

Observation of the night sky, before the advent of satellites, was assumed to be free of the artificial bright points that ...

The flashes of light were taken during the Palomar Sky Survey, a project that mapped the northern sky between 1949 and 1958.

Londoners reported seeing an atmospheric phenomenon that formed a spiral and an “S” shape in the sky on the evening of Nov. 4 ...

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

Three photographers were able to capture the red sprite phenomenon, when lightning flashes above thunderstorms, in high ...