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.
Some of the world's highest and coldest places contain important, hidden clues about our planet's history.
Scientists have identified a mammoth that roamed a distance equivalent to circling the entire planet twice.
For thousands of years, stories and fables have contained clues about our planet's geological history.
NASA's Curiosity rover has discovered that evidence of ancient life on the Red Planet may have been scrubbed.
The inner core of our planet is growing more on one side than on the other - so why isn't it tipping over ?
The space probe, which landed in 2018, has revealed some surprising findings about the planet's interior.
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.
What if it were possible to hide from a hostile alien civilization by 'cloaking' the entire planet ?
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.
A piece of metal thought to have come from the famed aviator's plane is set to undergo a battery of tests.
Astronomers have discovered what could be an indication of a previously undiscovered extrasolar world.