A new study has looked into the possibility that our planet is not simply a ball of water, metal and rock.
Scientists have discovered a previously unknown opening situated 62 miles beneath the planet's surface.
Astronomers have identified a new extrasolar planet that is thought to be comprised of more than 80% iron.
A diamond that originated deep beneath the planet's surface has been found to contain a new type of mineral.
Evidence of a planet has been found in a distant galaxy 28 million light years away.
A cargo plane reportedly encountered a mysterious object during a routine flight over Mexico last year.
The latest mission of the mysterious space plane has so far lasted 500 days and nobody knows what it's up to.
Caves dotted around the surface of the Red Planet could provide a safe haven for future human explorers.
Scientists searching for life-bearing exoplanets have identified a new class of potentially habitable world.
Scientists have identified a mammoth that roamed a distance equivalent to circling the entire planet twice.
NASA's Curiosity rover has discovered that evidence of ancient life on the Red Planet may have been scrubbed.
Many of our planet's most significant geological events have occurred in roughly 27.5-million-year intervals.
For the first time in over 30 years, the space agency will be venturing back to the second planet from the Sun.
The pilot of the doomed airliner may have attempted to leave 'false trails' and hide the plane's true trajectory.
A planetary defense exercise at the weekend ended up 'destroying' an area of Europe around 100km wide.
NASA's Insight lander has recently picked up the telltale signs of seismic activity on the Red Planet.
Sir Richard Branson's fledgling space tourism firm has revealed the latest member of its burgeoning fleet.
NASA's experimental Mars helicopter is carrying a piece from the Wright Brothers' original aircraft.
Astronomers have identified an extrasolar planet that appears to have regenerated its own atmosphere.
Scientists believe that a historic reversal of the Earth's magnetic field may have proven catastrophic.