Hidden magma oceans could shield rocky exoplanets from harmful radiation
Peer-Reviewed Publication
In honor of Global Astronomy Month, we’re exploring the science of space. Learn how astronomy connects us through curiosity, discovery, and a shared wonder for what lies beyond.
Updates every hour. Last Updated: 27-Jan-2026 17:11 ET (27-Jan-2026 22:11 GMT/UTC)
New research from the University of Rochester suggests that molten rock deep inside so-called super-earths may generate powerful magnetic fields necessary for sustaining life.
In a paper published in Earth and Planetary Physics, a scientific team presents a good correlation between temporal variations of the core magnetic field and the gravity field after separating the core mass transfer contributions in GRACE global gravity data combined with various global hydrological models. The correlation analysis between the main principal components of core magnetic and gravity signals reveals that the changes in the second time derivative of the core magnetic field coincide in trend with changes in the gravity field.
New research shows how Jupiter and Saturn developed dramatically different vortices at their north poles. The findings may elucidate not only the planets’ surface weather patterns but also what lies beneath the clouds, within the planetary interiors.