Anomalous radar reflections, thought to be evidence of liquid water under the ice on Mars, may instead be explained by multiple layers of even more ice.
A new two-layer model of radar scattering seeks to explain the unique properties of various terrains on Saturn’s largest moon.
Many present and near-future technologies can enable refined searches for so-called technosignatures, potentially providing evidence of extraterrestrial life in the universe.
Sites on Earth that are similar to geologic features on other planets can be studied to better understand other worlds and even prepare for future exploration.
Properties of an atypical geologic feature on Mars indicate a volcanic eruption occurred as recent as a few tens of thousands of years ago.