The geophysical evolution and astrobiological potential of ocean worlds are indelibly linked to the chemical compositions of their oceans and ice shells.
GJ-486b is a close-in planet orbiting an M dwarf and is therefore expected to have undergone strong atmospheric escape. Motivated by theoretical and observational studies on the constraints of its […]
On a calm day, a light breeze might barely ripple the surface of a lake on Earth. But on Saturn’s largest moon Titan, a similar mild wind would kick up […]
At some point in Earth’s history, chemistry transitioned from abiotic organic synthesis—the building of more complicated organic molecules from smaller ones by nonbiological means—to biochemistry.
Recent advances in prebiotic chemistry suggest that hydrogen cyanide (HCN) serves as a fundamental precursor for nearly all essential biomolecules and protometabolic processes for life’s emergence.
![[L] NASA ID: art002e000192 art002e000192 (April 3, 2026) -- NASA [R] art002e000193 (April 3, 2026) -- NASA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/04/Our-Home-World-As-Seen.png?resize=1200%2C718&ssl=1)
Left: A view of Earth taken by NASA astronaut and Artemis II Commander Reid Wiseman from one of the Orion spacecraft’s window after completing the translunar injection burn on April […]
![[L] The detrended and phase-folded RV time series of GJ 1132 b (top) and GJ 1132 c (bottom). Different draws of the Keplerian models from our posterior are superimposed in black. The different colored markers correspond to different RV time series. Binned data points are shown as red squares. [R] Phase-folded and detrended RV time series of LTT 3780 b (top) and LTT 3780 c (bottom). The best-fit Keplerian model is superimposed in black. The different colors and markers correspond to different RV time series. Binned data points are shown as red squares. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/04/Super-Earth-masses.png?resize=1200%2C720&ssl=1)
Tracing the compositional link between terrestrial super-Earths and their host stars provides clues to their dominant formation pathway. By constraining the stellar abundances of refractory elements, we can predict the […]
It transports far more than 100 times as much water as all of the Earth’s rivers combined: The Antarctic Circumpolar Current rushes around the southern continent unhindered by land masses […]
The goal of this expedition went far beyond collecting sediment cores. Scientists also set out to sample the water stored within the sediments, including from sandy layers that act as […]
Pollux is a candidate European instrument contribution to the Habitable Worlds Observatory (HWO), designed to advance our understanding of the formation and evolution of cosmic structures in the universe, and […]
