A meteor from another solar system landed on Earth back in 2014, but obtaining more information about it has proven challenging.
The image of an alleged Bigfoot found on Google's satellite mapping service has been dividing opinion this week.
The space rock passed us by at a distance of 2,200 miles - a fraction of the distance at which some satellites orbit the Earth.
An intriguing geological phenomenon at the center of our planet could help to explain a number of long-standing mysteries.
Archaeologists excavating a car park off the coast of Northumberland, England have unearthed seven skeletons.
The newly discovered world, which is 41 light-years away, is almost exactly the same size as the Earth.
Some minerals can be found almost anywhere, while others are so rare that there is only one known example.
A new paper has put forward a new theory to explain why we have yet to hear from any extraterrestrial civilizations.
A 17-ton meteorite that landed in Somalia has been found to contain two minerals never seen on Earth before.
The end of the spacecraft's current mission was marked by a series of sonic booms over Florida on Saturday.
Situated in our 'cosmic backyard', this newly discovered behemoth is ten times more massive than the Sun.
Archaeologists have unearthed one of the most important discoveries of recent years - a huge tunnel beneath a temple in Egypt.
The image, which appears to date back to the 1960s, seems to show a ghostly extra hovering in the background.
An Earth-based extremophile has shown that it is possible for life to survive on Mars for very long periods of time.
The tomb of St Nicholas - the real-life inspiration behind Santa Claus - lived and died around 1,700 years ago.
Palaeontologists have unearthed what is thought to be the leg bones of the largest species of bird to ever live.
Harvard astronomer Avi Loeb and colleague Amir Siraj believe that they have identified another interstellar visitor.
The controversial plan would involve using a fleet of 125 tanker jets to shroud part of the Earth's atmosphere.
The 17th-Century burial was recently unearthed by archaeologists at a cemetery in Poland.
The Harvard astronomer believes that a meteoroid that fell to Earth in 2014 could contain alien technology.