These rocks are one of the best terrestrial analogs to Martian rocks ... be enough water deep underground on Mars to cover the surface in a global ocean between 0.62 to 1.24 miles (1 and 2 ...

There's a whole ocean's worth of water locked in that rock, but the problem is that it's inaccessible. According to the team, the layer is 11.5 to 20 km (7 to 13 miles) beneath the surface, which ...

Seismic data collected by NASA suggests the amount of water hidden in the red planet's crust would cover its surface in a global ocean. Evidence is mounting that a secret lies beneath the dusty red ...

There might be a hidden ocean's worth of liquid water below the surface of Mars, seismic evidence suggests. According to a new paper published April 25 in the journal National Science Review ...

Mars Express has used its MARSIS radar to give strong evidence for a former ocean of Mars. The radar was deployed on the spacecraft in 2005 and has been collecting data from the subsurface ever since.

Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility ... and frozen samples of a Martian rock analog, in the form of diabase rocks from Sweden.

Mars once featured sun-soaked, sandy beaches with gentle, lapping waves from an ancient ocean, a new study suggests. Why it matters: The research marks the "clearest evidence yet" that the Red ...

Scientists have discovered signs of a hidden ocean of water on Mars beneath the planet’s surface. It is noted that seismic wave recordings indicate that a layer of liquid water may be hidden at a ...