Topic
Astrobiology
4 questions tagged Astrobiology — spanning every one of the seven Ws.
what
What is a subsurface ocean in the Solar System?
A subsurface ocean is a layer of liquid water hidden beneath ice or rock on a moon or dwarf planet.
SpaceAstrobiology
how
How do scientists search for life on Mars?
They look for past water, organic molecules, chemical energy sources, and environments that could have supported microbes. No confirmed life has been found yet.
AstronomyAstrobiology
how
How do scientists listen for signs of life in space?
They search for biosignatures, unusual chemistry, and possibly technosignatures using telescopes and radio antennas. Promising targets include exoplanet atmospheres and ocean worlds such as Europa and Enceladus.
SpaceAstrobiology
what
What is a biosignature in astronomy?
A biosignature is a substance or pattern that may indicate past or present life on another world. Common examples include certain gases in a planet’s atmosphere.
AstronomyAstrobiology