Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility of microbial life lurking deep below the Martian surface. As detailed in a paper in the ...

Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more ...

In the eyes of many planetary scientists, the surface of Mars's northern hemisphere has long looked like it once contained an ocean. Now it is "sounding" that way, too. Previous evidence for an ...

Astronomers have long been intrigued by the makeup of the asteroid belt’s largest body. When it was first spotted in 1801, Ceres appeared dry and rocky, its surface marked by craters and dents. For ...

What new methods can be developed to study the Martian subsurface? This is what a recent study published in the Journal of Geophysical Research Planets hopes to address as an international team of ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient, ...