The sinkholes in China's Hubei province are so large that it's possible to find whole ecosystems inside them.
A theoretical new type of telescope could make it possible to obtain close-up views of extrasolar worlds.
The former MoD UFO investigator has suggested that alien monitoring devices could be disguised as common animals.
Scientists have revealed the discovery of the world's largest known crown jellyfish and it looks decidedly alien.
The five-member Trapp family from Esko has a combined height equal to the length of half a tennis court.
Scientists have found signs of a historical earthquake so large that it produced a tsunami 5,000 miles long.
In a world first, a doctor on Earth appeared in real-time aboard the ISS using augmented reality technology.
The wrist-mounted device could further blur the line between the real world and the virtual world.
An obscure breed of pigeon from Budapest is certainly one of the most peculiar birds you are likely to see.
This ridiculously long limo comes complete with a swimming pool, mini-golf course and even a helicopter pad.
The first mission of NASA's Artemis moon program will be launching within the next few months.
Anthropologist David Akins believes that the world-famous relic may have actually been made in England.
It has been 25 years since a mass UFO sightings over Phoenix, Arizona captivated the world.
One energy company is hoping to change the world by producing electricity from the heat found deep beneath our feet.
With a wingspan greater than that of an entire football field, this gargantuan aircraft is a sight to behold.
The abduction of two men by alleged alien entities almost 50 years ago remains one of the world's most chilling abduction cases.
Guinness World Records has officially recognized the gargantuan berry as the heaviest ever recorded.
Artist Concetta Antico has a view of the world unlike any other thanks to a unique feature of her eyes.
A pair of new Discovery+ documentaries will cover two of the world's most chilling alien abduction stories.
It's a claim that has been doing the rounds for years, but just how accurate is it ?