Yesterday was World UFO Day – and we’re remembering mystery objects in the sky and our enduring fascination with them.

For those who want to experience the otherworldly feeling of spotting a UFO, looking into the Colorado skies might be a pretty good idea, as people around the state have reported 3,465 sightings, ...

Astronomers are reporting the detection of a large object entering our solar system, and it is causing quite the stir in the ...