Earth's core could be leaking helium

Record concentrations of a helium isotope found inside 62-million-year-old Arctic rocks could be the most compelling evidence to date of a slow leak in our planet's core.

UK astronomers find exoplanets with sodium, helium in atmospheres

A team of researchers, using Europe’s Very Large Telescope in Chile, has found an exoplanet, WASP-96b, with a cloud-free atmosphere, allowing them to detect sodium in levels similar to abundances on Earth.

Scientists detected helium in an exoplanet's atmosphere for the first time

WASP-107, the star around which WASP-107b orbits every six days, is so powerful that it is gradually dissolving the exoplanet’s atmosphere. As a result, WASP-107b leaves a comet-like trail of helium in its wake.