NASA's tiny SPARCS spacecraft sends first images of flaring stars

NASA's SPARCS (Star-Planet Activity Research CubeSat) mission has successfully sent its first images from orbit, confirming that its ultraviolet instruments are functioning correctly. Launched on January 11, the small spacecraft—about the size of a large cereal box—aims to study how stellar activity, particularly ultraviolet radiation from low-mass stars, affects the habitability of nearby exoplanets. The "first light" milestone, achieved on February 6, validates SPARCS' ability to capture precise ultraviolet measurements critical for its scientific goals. SPARCS will observe approximately 20 low-mass stars, which make up a significant portion of the Milky Way's stellar population and often host rocky planets. These stars, cooler and dimmer than the Sun, flare more frequently, emitting radiation that can influence planetary atmospheres and potential habitability. The mission employs advanced ultraviolet detector technology developed at NASA's Jet Propulsion Laboratory, featuring integrated filters on silicon-based detectors similar to smartphone cameras. This