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Extraterrestrial Life324 articles archived since 1845

Mars Surface Glass Could Hold Ancient Fossils

Scientists have found ancient "impact glass" on the surface of Mars, which formed when asteroids struck, a billion or more years ago. If anything was alive at the time, biological materials could be trapped inside. Christopher Intagliata reports

June 12, 2015 — Christopher Intagliata

Martian Glaciers Equal Meter-Thick Planetary Ice Shell

Radar measurements and models of Earthly glacial ice flows led researchers to conclude that the glaciers spotted on Mars from orbiters contain nearly 150 billion cubic meters of water. Lee Billings reports   

 

April 13, 2015 — Lee Billings

Enceladus Might Be a Methane Hotspot

NASA’s Cassini spacecraft spotted a surprising amount of methane erupting from Saturn’s moon Enceladus, suggesting it harbors more methane than we thought. Clara Moskowitz reports

March 25, 2015 — Clara Moskowitz

Titan Could Host Life "Not As We Know It"

Saturn's moon Titan is too cold for cell membranes to form as they do on Earth. But researchers have come up with a cell membrane that could exist on Titan. Christopher Intagliata reports

March 3, 2015 — Christopher Intagliata

Bacteria Got an Early Fix on Nitrogen

New evidence points to the evolution of the ability for bacteria to grab nitrogen from the atmosphere some 3.2 billion years ago, about 1.2 billion years earlier than thought—with implications for finding extraterrestrial life. Lee Billings reports

February 23, 2015 — Lee Billings
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Scientific American Health & Medicine

Scientific American Health & Medicine