The US military's mysterious X-37B has spent almost a year in space on its latest secretive mission.
Scientists have discovered that the Moon may not be the only natural satellite in orbit around our planet.
A robotic arm has been programmed using artificial intelligence to locate the hard-to-spot cartoon character.
Researchers in the UK have achieved a significant milestone in their quest to reverse the aging process.
The mass UFO sighting that occurred over the Texas city of Lubbock in 1951 still continues to perplex and intrigue.
Scientists have revealed the discovery of a new species of giant pterosaur that lived over 200 million years ago.
NASA is investigating the possibility of sending a probe to Mars that could directly seek out alien life forms.
Construction workers have unearthed what is thought to be a second Sphinx near the Valley of the Kings.
Scientists have been studying a meteorite that dates back to a time before the birth of our solar system.
A runaway global warming effect may still occur even if countries do manage to slash CO2 emissions.
22-year-old Brock Meister from Indiana managed to survive having his skull detach completely from his spine.
The iconic rover, which landed on Mars six years ago, has celebrated with a self-congratulating Tweet.
Scientists have discovered discrepancies in our understanding of how fast the universe is expanding.
The contents of a 19th-century time capsule unearthed in Massachusetts still remain something of a mystery.
Footage has emerged showing what appears to be a Gollum-like creature skulking around in the woods.
An anonymous guest has returned a stolen key to Lumley Castle hotel in Durham after four decades.
A large Earth-like world has emerged as the most likely place to look for life outside of our solar system.
It has been discovered that a colony of 500,000 breeding pairs has been reduced to just 60,000 within 35 years.
In a final report on the fate of MH370, investigators admit that they have no explanation for its disappearance.
Frederick Valentich disappeared without a trace after encountering a UFO on a flight to King Island, Tasmania.