A spokesperson for the Department of Defense has issued a statement regarding the footage that emerged earlier this month.
The remarkably well-preserved sword has been described as a 'major archaeological sensation'.
Assistant Professor Peter Crockford takes a look at how much life has inhabited this planet since the first cell appeared.
Scientists in the UK have discovered what appears to be a gargantuan ring-shaped structure far off in space.
Three Australian researchers take a look at how artificial intelligence could tackle the problem of loneliness.
The man had dreamt that there was gold underneath his kitchen and then spent over a year digging straight down.
Known as Gigantopithecus blacki, this enormous primate was the largest of its kind ever to walk the Earth.
[Updated] An anonymous submitter has sent us photographs showing an alleged UFO being downed by US fighter jets.
Over 500 million years ago, these huge predatory worms prowled the Cambrian seas.
A woman from Virginia suffered a seizure eight months ago that saw her heart stop for almost half an hour.
For decades, there have been stories of a particular type of South American palm tree that can 'walk' several meters a year.
Next year we will be seeing the launch of the Europa Clipper as well as the first crewed mission of the Artemis program.
The witness, known only as John Doe, was one of several to see a strange object over Canada more than 50 years ago.
After several delays earlier this month, the enigmatic vehicle has finally headed back into space atop a SpaceX Falcon Heavy rocket.
This remote Rhode Island house has been home to all manner of unexplained occurrences over the years.
Scientists have developed a new modeling tool to help simulate the effects of a nuclear device on a large asteroid.
The cryptic and seemingly incomprehensible series of words had baffled cryptographers for years.
Could our evolutionary history during the time of the dinosaurs have determined how long we live ?
Interbreeding between modern humans and Neanderthals could account for why some of us are predisposed to be early birds.
For thousands of years, the Indigenous Coast Salish people bred special dogs that had thick, long white hair.