The planes are typically used to transport personnel to and from secure and secretive locations within the US.
A fresh new search for the missing plane's whereabouts aims to solve the MH370 mystery once and for all.
The Bering Air flight had recently been reported missing in a region notorious for unexplained disappearances.
Scientists now believe that our solar system may have once been visited by something very large indeed.
The perplexing incident occurred over Egypt during a recent routine flight of a Boeing 747 airliner.
Biologist Prof Tim Coulson has suggested that one species in particular has the potential to dominate the planet.
The clandestine vehicle has been in space for almost a year on its latest mysterious mission.
The rhesus monkeys have so far managed to evade capture after escaping from a laboratory in South Carolina.
The object had been picked up on sonar and was thought to be the wreckage of the famed aviator's plane.
We tend to assume that an alien civilization would have its own home world - but what if they didn't actually need one ?
The Moon will be joined by a second natural satellite for a short time beginning this Sunday.
An Australian researcher believes he knows what happened to the plane and why nobody has found the wreckage.
The smallest planet in our solar system may be hiding a treasure with a value beyond imagination.
If an alien civilization has terraformed the atmosphere of a distant planet, we may be able to find it.
The private jet and its passengers had vanished without a trace, leading to decades of fruitless searches.
A planet thought to be the real-life equivalent of Spock's homeworld Vulcan might not actually exist after all.
China's answer to the X-37B is doing something in Earth's orbit and nobody is quite sure what that might be.
Luring inquisitive extraterrestrials to our planet using nuclear radiation seems like a bit of a shot in the dark.
A type of rare, though extremely energetic and deadly cosmic event is able to wipe out whole planets.
A gas discovered in the atmosphere of this distant extrasolar planet is 'only produced by life', say scientists.