According to reports, Grusch gave a talk to a number of 'Wall Street bigwigs' and intelligence community officials.
The ex-US intelligence officer recently talked a bit more about his findings on the Joe Rogan Experience podcast.
The four-hour talk summarized the agency's findings after it launched an investigation into the phenomenon a year ago.
There is evidence to suggest that the satellite - named Kosmos-2558 - is tailing a confidential US satellite.
The guard was quizzed by his co-worker when she noticed him having a conversation with an empty corridor.
The guard, who in the clip appears to be talking to thin air, had reportedly been speaking to a woman who had died the previous day.
The pair briefly discussed the UFO phenomenon during an interview on HBO's 'Real Time With Bill Maher'.
The former president of the United States briefly touched upon the phenomenon and the possibilities of alien life.
A previously unreported US Navy encounter with UAPs has been revealed by a former marines officer.
An experienced hiker became fearful for their life after being followed by an unidentified creature in the Cascade Mountains.
A bizarre recording represents the first ever documented case of a duck being able to mimic human speech.
John Sevier Austin possesses the unique ability to talk and even sing backwards with absolute precision.
During a recent interview, SpaceX CEO Elon Musk talked about aliens and the futility of looking for them.
The man who believes 'Oumuamua was created by extraterrestrials has talked about his recent experiences.
Speaking during a recent interview, John Brennan hinted at the possibility that we are being visited by aliens.
The space agency has been able to 'talk' to the distant probe thanks to a Deep Space Network dish upgrade.
The Humboldt squid has evolved a novel solution to the problem of communicating in the depths of the ocean.
During a recent TV interview, Aiden Gillen and Neal McDonough expressed their own thoughts on UFOs.
A family in the United States has been left terrified by an Elsa doll that seems to have a mind of its own.
Bigfoot enthusiasts will be descending on Gatlinburg this summer to talk about all things Sasquatch.