A purple-pigmented molecule could have been the first to turn sunlight into metabolic energy.
A little stream in the south of England could guide the way towards finding evidence for ancient life on Mars, in the form of fatty acids preserved in an iron-rich mineral called goethite.
Carbon-rich organic molecules, which could potentially form the building blocks of life, have been discovered in the watery plumes spewing out from fissures in the surface of Saturn's moon Enceladus.
The host of the popular Gravity Assist podcast talks to Astrobiology Magazine's Keith Cooper about why he feels the show is giving back something important to the listeners.
Life in Earth's oceans may have had a slow start because phosphorus — a key nutrient of life — was not recycled through the biosphere fast enough.
A new study comparing the abundance of nitrogen molecules in Earth's atmosphere and on the ground could one day help researchers find signs of biology on other planets.
A briny pond in Antarctica's McMurdo Dry Valleys could be receiving its water from an underground aquifer, in conditions not dissimilar to those found on the Red Planet.
Russian and U.S. scientists are exploring a mission that may end up looking for signs of alien life in Venus' sulfur clouds.
Meteorites that crashed onto Earth billions of years ago may have provided the phosphorous essential to the biological systems of terrestrial life.
A robot designed to tunnel through thick ice caps and penetrate subterranean seas could one day explore the underground oceans of Jupiter's moon Europa — an environment potentially habitable to life.