SPARCS CubeSat Captures 'First Light' Images

NASA's new space telescope provides insights into low-mass stars and their potentially habitable planets.

Mar. 17, 2026 at 6:32am

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NASA's SPARCS (Star-Planet Activity Research CubeSat) space telescope has captured its first images, revealing insights into the temperatures of low-mass stars. The CubeSat, roughly the size of a large cereal box, was launched on January 11, 2026 and will monitor flares and sunspot activity on stars that are 30% to 50% the mass of the Sun. These stars host the majority of the Milky Way's habitable-zone terrestrial planets, which could potentially support life.

Why it matters

SPARCS is the first dedicated space telescope to continuously and simultaneously monitor the far-ultraviolet and near-ultraviolet radiation from low-mass stars, which are the most common in the Milky Way and host the majority of the galaxy's potentially habitable planets. Understanding the activity of these stars is crucial for assessing the habitability of their orbiting planets.

The details

The first images from SPARCS show that one star is visible in both the near-ultraviolet and far-ultraviolet wavelengths, indicating it is the hottest of the stars observed. The spacecraft's camera, SPARCam, uses a specialized technique to improve sensitivity and performance by integrating the filters directly onto the UV-sensitive detectors, eliminating the need for a separate filter element.

  • SPARCS launched aboard a SpaceX Falcon 9 rocket on January 11, 2026.
  • The first 'first light' images were captured on February 6, 2026, three weeks after launch.

The players

SPARCS (Star-Planet Activity Research CubeSat)

A NASA CubeSat space telescope roughly the size of a large cereal box, designed to monitor flares and sunspot activity on low-mass stars that host potentially habitable planets.

NASA's Jet Propulsion Laboratory

The laboratory where the SPARCS camera's filters, detectors, and associated electronics were designed, fabricated, and tested.

Arizona State University

The university leading the SPARCS mission, funded by NASA's Astrophysics Research and Analysis program.

Blue Canyon Technologies

The company that fabricated the SPARCS spacecraft bus.

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What’s next

Over its one-year mission, SPARCS will target approximately 20 low-mass stars and observe them over durations of five to 45 days.

The takeaway

SPARCS represents a significant step forward in our understanding of low-mass stars and their potentially habitable planets, which make up the majority of the Milky Way's planetary systems. By continuously monitoring these stars in both the near-ultraviolet and far-ultraviolet, SPARCS will provide crucial data to assess the habitability of their orbiting worlds.