The massive central region of the Milky Way contains vast clouds of warm, turbulent gas, but new observations reveal for the first time a cold, dense, less turbulent component on the brink of star formation.

Hubble Space Telescope spectra of Europa’s jumbled chaos terrains reveal a new absorption feature at 230 nm that appears to be associated with irradiated sodium chloride and correlates with other spectral features.

WINTER is coming: this new 1-meter telescope will provide near-infrared follow-up observations of transient events called kilonovae that occur when a neutron star merges with another neutron star or a black hole.

For the first time, neutral gas has been detected via damped Lyman-alpha absorption and 21-cm emission outside of the star-studded regions of a galaxy, revealing a gaseous connection between two galaxies.

Many of the 37 sources identified in observations from the Zwicky Transient Facility to have light curves with multiple peaks are still active, suggesting that these intriguing targets should be followed up.

Simulations predict that ice-rich planets in the range of 5–15 Earth masses likely have mixed ice–rock cores, but substantial mass loss can extract the ice from the core, leading to generation of a tenuous atmosphere.