“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.”
Europa is irradiated by Jupiter’s intense magnetosphere, but you don’t have to dig far before life finds a way (theoretically).
Instead of looking at individual biosignatures, a new dynamic framework suggests that studying atmospheric seasons may be the key for detecting alien life on exoplanets.
Looking for aliens across deep space is great, but have we looked hard enough in our own terrestrial backyard—here on Earth?
Some scientists were quick to shout "Alien," but not everyone agrees.