Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system, although they ...

Astronomers have detected molecules on exoplanet K2-18b that may have been produced by simple organisms, claiming it's the strongest evidence yet of life off Earth.

We tend to think of habitability in terms of individual planets and their potential to host life. But barring outliers like ...

“The planet orbiting Kepler-62 has so much cloud cover that it cools off too much, sacrificing precious habitable surface area in the process. On the other hand, the planet orbiting the white ...

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was suspected ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery ...