Irish skies were illuminated by a mysterious bright object on Wednesday night, sparking widespread curiosity before experts ...

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

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

A new study investigates strange bursts of light captured in old astronomical photos, suggesting they may link to both UFO sightings and Cold War nuclear testing.

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

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

A strange swirl in the sky seen over much of Britain and Europe this week wasn’t the result of alien activity but rather a SpaceX Falcon 9 rocket. The UK’s Met Office, which monitors weather ...

Two longtime Arizona law enforcement officers have launched a unique organization aimed at helping police officers, firefighters, EMTs and other first responders process encounters with things they ...

New moons are only visible during solar eclipses. This visualization of a tiny sliver, for example, is technically a crescent moon. NASA Goddard Space Flight Center via Flickr under CC BY 2.0 This ...

Night sky lovers have been getting all kinds of treats in the last month: A Perseid meteor shower that’s included fireballs, and a rare “Black Moon” that gave us a really dark sky - all the better to ...