A new study suggests that we may have been receiving signals from intelligent aliens but simply didn't realize it.
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.
What if consciousness didn't simply arise from the physical brain, but was instead the basis of reality itself ?
The complex and extensive test is designed to measure how close AI is to exceeding human-level intelligence.
The major policy change was revealed on Friday as the space agency grappled with delays and technical issues.
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.
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.
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.
A cluster of 100 stellar mass black holes is thought to be making its way through the Milky Way.
New research into the mechanics of consciousness have revealed fascinating new insights into how it might arise.
Scientists have identified what they believe to be the landing site of the short-lived Soviet spacecraft.
New research has offered up a new interpretation of a letter found in the 18th century thought to be from Shakespeare's father.
Turning water into fuel would be revolutionary and could make it possible to produce fuel on the Moon or Mars.
A Norwegian researcher had set out to prove that directed-energy weapons could not have caused the condition.