Overview
- The research study, published and reported Tuesday, July 21, 2026, outlines a mission concept that would launch two spacecraft together: a high‑speed impactor and a long‑term observer probe.
- Researchers identify near‑Earth asteroid 2015 XF261 as a candidate for a possible test around 2030 and propose an impact at roughly 9 km/s that they say could measurably alter the asteroid's heliocentric orbit.
- The observer probe would carry cameras, spectrometers and dust detectors to monitor the collision and track orbital and physical changes over years to measure momentum transfer and internal structure.
- Major technical hurdles remain, including sparse tracking data for 2015 XF261, the need for autonomous terminal guidance because of communication delays, and no formal mission approval or funding at this stage.
- If developed, the mission would extend lessons from NASA's 2022 DART test by targeting a smaller, potentially solid body and could change how agencies plan and prepare practical planetary‑defence responses.