NASA's AWE wraps up a successful run above the space station
On May 21, 2026, ground operators at NASA formally powered down the AWE (Atmospheric Waves Experiment) instrument, closing the data-gathering phase of a mission that outlasted its original two-year plan. Mounted on the exterior of the International Space Station since November 2023, AWE spent its operational life tracking atmospheric gravity waves — large-scale oscillations that ripple through the upper layers of Earth's atmosphere.
These waves are not the ocean variety. They originate from weather systems, mountain ranges, and thermal contrasts at low altitudes, then propagate upward into the mesosphere and thermosphere. There, they disturb the charged particle environment in ways that can affect satellites, radio communications, and GPS accuracy. In short, AWE was built to trace a direct line between the storms we experience on the ground and the space weather that quietly disrupts our technology in orbit.
The dataset collected over more than two years will be a valuable resource for heliophysics researchers working to improve models of atmosphere-space coupling — a field where significant gaps in understanding remain. The mission is considered a full scientific and operational success.
ESA's Swarm satellites catch Earth's core changing direction
At almost the same time, the European Space Agency released findings from its Swarm constellation that shed new light on what happens thousands of kilometers beneath our feet. Scientists detected an unexpected reversal in the movement of liquid iron within Earth's outer core — a shift that, as yet, has no confirmed explanation.
The outer core extends from roughly 2,900 to 5,100 kilometers below the surface and consists of molten iron and nickel. Its circulation generates Earth's magnetic field, the invisible shield that deflects harmful solar and cosmic radiation. Any disruption to those flows can alter the field's strength and geometry over time. Swarm's three satellites measure minute variations in the magnetic field from orbit, providing scientists with a continuous, planet-wide record that no surface-based network could match.
The results demonstrate how satellite data can probe the deepest parts of our planet — regions that no drill, probe, or seismic array can access directly. Understanding these deep dynamics matters for long-term predictions of magnetic field behavior and, by extension, planetary habitability.
Algeria's arid terrain captured from orbit
Rounding out this burst of Earth-focused science, ESA released a new image in its ongoing Earth from Space series, this time showing an arid landscape in Algeria. Captured by one of the agency's Earth observation satellites, the image is more than a striking photograph.
Algeria covers a substantial portion of the Sahara, the world's largest hot desert. Regular satellite monitoring of this region helps researchers track desertification rates, vegetation boundary shifts, and changes in surface geology driven by wind and sporadic rainfall. That data feeds into climate adaptation planning at both regional and international levels.
Taken together, these three pieces of news — a retired atmosphere experiment, a discovery about Earth's molten interior, and a high-resolution view of a desert — underscore a broader truth: Earth remains one of the most scientifically compelling objects in the solar system. Studying it from space, layer by layer, continues to yield surprises that ground-based science alone could never uncover.
