Over 500 million years ago, these huge predatory worms prowled the Cambrian seas.
Here we take a look back at the most popular historical mysteries and discoveries from the last twelve months.
The iconic 90s show introduced millions to the world of shadowy government conspiracies, UFOs and weird creatures.
The billionaire entrepreneur and founder of Blue Origin envisages a future in which most people live in outer space.
Millions of years ago, the Earth was home to some truly titanic insects including one particularly enormous millipede.
The particle is over one million times more energetic than anything generated by the Large Hadron Collider.
Archaeologists have found text written thousands of years ago that nobody has been able to translate.
Authorities ordered local residents to remain indoors as efforts were made to capture the beast.
A 300-year-old Spanish galleon carrying enormous amounts of gold and jewels could soon see the light of day again.
Scientists have determined the whereabouts of a large chunk of Australia that broke off in the distant past.
A new analysis of samples collected during the Apollo 17 mission has raised new questions about the age of the Moon.
The space agency's Psyche spacecraft will be the first ever to attempt to directly visit a metal asteroid.
The well-preserved tracks were left in the silt by a species of bird that would have made even today's ostriches seem tame.
The popular doorbell camera brand is offering a large cash sum to anyone who can capture evidence of extraterrestrials.
A controversial new study based on an 8.7-million-year-old skull could serve to rewrite the history books.
Scientists have discovered evidence of a previously unknown period of low temperatures over 1.1 million years ago.
The clip, which shows a woman momentarily stop motionless, has racked up millions of views on TikTok.
An escaped lion on the loose in Germany has prompted an extensive police search that has lasted for days.
If you have particularly deep pockets, consider picking up a bovine investment - or at least a third of one.
The dark, bone-filled catacombs are more than a lot of people believe they can handle - even for millions of dollars.