Investigators have no idea what it is.
What did they see?
Extraterrestrial intelligence, a rogue planet, or even a holographic projection?
There's an interesting history behind the Clintons and UFOs.
From UFOs to voices in their heads, astronauts have reported some incredible stories.
The lake supposedly housed the remains of ancient alien gods.
Recently released CIA documents show that Kennedy requested highly classified documents pertaining to UFOs 10 days before his assassination.
The Ghost Diaries goes in search of more info related to the puzzling alien encounter that supposedly happened at the infamous Marconi Systems.
A document found at the 2013 Burning Man contains the transcript from the Citizens UFO Hearing, in which six former members of US Congress listened to the testimony of 40 military, scientific, and governmental UFO witnesses.
Take a look at images captured by both NASA and Google Earth that currently cannot be explained by scientists.
From lenticular clouds to glitches in the matrix, the Ghost Diaries breaks down the top 8 explanations for the UFO phenomenon.
An aviation expert confirms the recent UFO sighting in Colorado is beyond explanation.
What is the deal with the rash of UFO sightings at the Popocatepetl volcano in Mexico? Take a look at this compelling footage.