An asteroid that was once thought to be heading for the Earth was later found to be heading toward the Moon instead.
Retired general William Neil McCasland's disappearance has sparked rumors and speculation.
A disturbing find on a beach in Russia has raised the possibility that orcas may be resorting to cannibalism.
The 60-year-old made global headline news back in the 2000s when he hacked into US government systems.
What if consciousness didn't simply arise from the physical brain, but was instead the basis of reality itself ?
There are still many unreleased documents pertaining to the UK's most hotly debated and enduring UFO case.
The complex and extensive test is designed to measure how close AI is to exceeding human-level intelligence.
During the Cold War, a spate of mysterious sightings ended up exposing a plot to hide nukes from the US.
The major policy change was revealed on Friday as the space agency grappled with delays and technical issues.
An analysis of soil samples taken from the base of some of the statues has revealed something unexpected.
The iconic seed depository continues to provide a hedge against an apocalyptic doomsday scenario.
Just when it looked like the launch would go ahead, another spanner in the works manifested itself.
Dr Gentry Lee, who worked on the Mars Viking mission, has spent decades designing probes that land on other worlds.
Evidence of ancient life on Mars might be found in a place where NASA's rovers have yet to explore.
The return of the iconic 90s TV series will feature two new leads and looks set to carry on where the old show left off.
During the 1950s, the CIA had been working on a program designed to find ways to manipulate people's behavior.
The site, which offers a huge collection of declassified government documents, saw its archive disappear overnight.
In a surprising move, President Trump has suddenly decided to release previously classified UFO documents.
An intriguing atmospheric phenomenon could give rise to strangely colored rainstorms in the near future.
It may still be possible to intercept the enigmatic interstellar visitor... but it might take a while.