Cosmic rays likely annihilate amino acids within two meters of the red planet’s surface, according to a first-of-its-kind experiment.
Earth’s water may have seeped up from its depths, as opposed to being delivered by impacts from outer space, according to a new study.
The new research lends credence to the idea of briny lakes existing under the Martian surface and is an important development in the search for Martian life, if it exists.
“It looks like the majority of these organisms are living at energy regimes that are below what we thought was even capable of maintenance—just staying alive.”
Some 555 million years ago, this worm-like animal with a mouth and butt tunneled through the seafloor, originating the body plan that gave rise to humans and most other animals.
"Oxygen is one of the most exciting molecules to detect because of its link with life, but we don't know if life is the only cause of oxygen in an atmosphere.”
But skeptics say more research is needed to confirm that soil samples were not contaminated by younger worms.
Rachel Smith studies the birth of stars to better understand the origins of life on Earth, and perhaps elsewhere in the universe.
Penn State professor and geomicrobiologist-slash-astrobiologist Jenn Macalady is answering how we and other organisms could survive on other planets, by looking deep into Earth’s history.
Europa is irradiated by Jupiter’s intense magnetosphere, but you don’t have to dig far before life finds a way (theoretically).
Carbon-rich molecules were detected in samples collected from Enceladus’ ocean—yet another indicator that it could host microbial life.