Learn about steam worlds outside of our Solar System that could provide answers in the search for alien life.

For years, scientists have theorized about a ninth planet beyond Neptune. NAOJ/ASIAA Ammonite has likely been around since the solar system’s infancy and has maintained a stable orbit for about ...

Beyond Neptune, a smaller 'ninth' planet has been identified in the Kuiper Belt.

JWST could potentially detect the signature of methyl halide compounds, produced by microbial life in Earth's ocean, on ...