Other theories suggest magma has been seeping through sheets of Martian rock. The "spiders" caused ... when Martian winter subsides, bathing its surface in warmer temperatures.

In addition to the Virgin River, there are several areas within the park where groundwater oozes out of the cracks and crevices in the Navajo sandstone, including at Weeping Rock. Thanks to the ...

The most surprising revelation from NASA's Curiosity Mars Rover—that methane is seeping from the surface of Gale Crater ... which is "soil" made of broken rock and dust. When temperature ...