Water retention on Earth-like planets around variable stars

What can star variability—changes in a star's brightness over time—teach astronomers about exoplanet habitability? This is what a recent study accepted for publication in The Astronomical Journal hopes to address as a team of scientists investigated the interaction between a star's activity and exoplanetary atmospheres. This study, available on the arXiv preprint server, has the potential to help astronomers better understand how star variability plays a role in finding habitable exoplanets, specifically around stars that are different from our sun.