It's hard to look for signs of life beyond Earth. It's a little easier if we assume that life out there is like Earth life. But what if it isn't?
Scientists estimate that parts of Mars’ would be able to support up to one million microbes per kilogram of rock deep underground.
Newly described fossils give some support to the hypothesis that life on Earth emerged in a deep-sea hydrothermal vent
Scientists compared features of ancient fossils to modern microorganisms and found living things could move on their own at least 3.4 billion-years ago.
Sunlight does not reach the deepest parts of the ocean, but life still thrives in the darkness. Below depths of 200 meters, where sunlight cannot reach, some organisms eat organic material that falls from the sunlit zone. For these organisms, photosynthetic organisms, such as phytoplankton and algae, form the basis of…
Scientists study organic material from the Chicxulub crater to identify the microbes that lived within it, to understand what happened to the Earth when that giant asteroid killed all the dinosaurs.
The Mars 2020 mission involves sending a rover, named Perseverance, to Mars to look for evidence of past life on that planet. Perseverance will collect samples of 3 billion year old rocks that scientists on Earth think might contain signs of ancient life on Mars. Later, NASA will launch a mission to retrieve those…