Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility of microbial life.

NASA's $850 million InSight Lander is the first designed to study the interior structure of Mars. Until now, NASA's landers mainly focused on exploring Mars' surface for signs of potential life.

Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground.

Scientists have identified another possible commonality between Earth and Mars: a solid inner core. Scientists have ...

sending back photographs and collecting data about Mars' interior for four years. Despite the issues with its drill, Insight's mission can generally be regarded as a success. The lander detected ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...

More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its ...

In 2024, scientists made headlines when they found evidence of copious amounts of water inside a layer of the Martian crust.

NASA’s InSight lander recorded surprisingly large quakes that indicate Mars is more seismically active than we first thought.

Water once existed in abundance of at the surface of Mars. How much of that water has been stored in the planet's crust is still unclear, according to a new analysis.

Research published late last year indicated “seismic discontinuities in the Martian crust” that scientists believe could be an indicator of liquid water under the Martian surface, raising the ...