Astronomers have detected molecules on exoplanet K2-18b that may have been produced by simple organisms, claiming it's the ...

A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of Mars is providing fresh evidence ...

It orbits in the "habitable zone" - a distance where liquid water, a key ingredient for life, can exist on a planetary surface - around ... solar system's smallest gas planet.

A Southwest Research Institute-led study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, ...

As temperatures rise during the Martian spring, CO2 trapped beneath the surface ... planet had a thicker atmosphere and possibly liquid water? If so, could similar underground pockets of gas ...

which as a gas giant planet likely has a similar structure and chemical composition. Or for another way to picture this, try imagining the surface of the Earth, says Philip Muirhead of Boston ...

Slushy hailstones of ammonia and water were part of a bizarre theory to explain the planet's poorly mixed atmosphere. These mushballs seem to be real, say UC Berkeley scientists.

Other substances exhibit similar behavior; for example, near the surface ... discovery of a "forbidden" planet orbiting a small star has raised questions about gas giant formation theories.

The discovery not only reveals a chemical compound essential on Earth for processes including photosynthesis and the carbon cycle, but also indicates that gas giant planets elsewhere in the galaxy ...

The gas planets are Jupiter ... They're balls of hydrogen and helium - you couldn't stand on the surface of the planet because it's not solid.

The gas giant planet's spots and swirls come from massive ... Volcanoes rage on Io's surface, earning it the title of the solar system's most volcanically active body. And scientists believe ...