Was Life on the Early Earth Purple? By Keith Cooper A purple-pigmented molecule could have been the first to turn sunlight into metabolic energy.
Iron-rich Minerals on Mars Could Contain Life's Fatty Acids By Keith Cooper 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.
Complex Organics Found on Saturn Moon Enceladus: What It Means for Life By Keith Cooper 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 Astrobiology Magazine Guide to TESS By Keith Cooper NASA's next mission to continue the search for Earth-like worlds is ready to blast off.
Gravity Assist: An Interview with NASA's Jim Green By Keith Cooper 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.
How Phosphorus Helped Oxygenate Earth's Atmosphere By Keith Cooper 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.
Nitrogen Tug-of-War Reveals Earth's Biogeochemistry By Keith Cooper 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.
Groundwater on Mars? Salty Antarctic Pond Could Reveal Clues By Keith Cooper 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.
Life Evolves Adaptions to Microgravity By Keith Cooper Stress of space increases bacteria's performance.
Could Dark Streaks in Venus' Clouds Be Signs of Alien Life? By Keith Cooper Russian and U.S. scientists are exploring a mission that may end up looking for signs of alien life in Venus' sulfur clouds.
Did Asteroids Deliver Key Building Block of Life to Earth? By Keith Cooper Meteorites that crashed onto Earth billions of years ago may have provided the phosphorous essential to the biological systems of terrestrial life.
Tunneling Cryobot Robot May Explore Icy Moons By Keith Cooper 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.
When Did the Universe Have the Right Stuff for Planets? By Keith Cooper Heavy "metals" are needed to form planets around stars, scientists say.
E.T., Phone Earth! Giant Radio Telescope Could Listen for Alien Signals By Keith Cooper Can the Square Kilometer Array be used to hunt for extraterrestrial signals?
Villain in Disguise: Jupiter's Role in Impacts on Earth By Keith Cooper Jupiter may cause more asteroids and comets to hit our planet.
Could Alien Life Exist in the Methane Habitable Zone? By Keith Cooper Water may not be the only liquid that can support life.
Dolphin Studies Could Reveal Secrets of Extraterrestrial Intelligence By Keith Cooper Those looking for non-human intelligence can start here on Earth with dolphins.
