Tag Archives: occur

Titan, Saturn’s icy moon, is an ideal planetary body to study prebiotic chemistry, origins of life, and the potential habitability of an extraterrestrial environment. It has a nitrogen-based atmosphere, complex organic chemistry fueled by radiation from the Sun and Saturn’s magnetosphere, hydrocarbon lakes, organic dunes on the equator, and seasonal …

Non-marine animals (amphibians, reptiles, birds and mammals) have apparently experienced at least 10 distinct episodes of intensified extinctions over the past 300 million years. Eight of these extinction events are concurrent with known marine mass extinctions, which previously yielded evidence for an underlying period of 26.4 to 27.3 million years …