NASA's Hubble Space Telescope has detected the first-ever observed spin reversal of a comet, offering scientists an unprecedented look at how volatile outgassing activity can dramatically alter the physical behavior of small solar system bodies. According to NASA, astronomers found evidence that a small comet gradually slowed its rotation before reversing its direction entirely — a phenomenon never before directly observed in a comet. The finding underscores how jets of gas and dust erupting from a comet's surface as it heats near the Sun can act as natural thrusters, exerting torque on the comet's nucleus and fundamentally changing its rotational dynamics over time. Researchers say this discovery provides a dramatic real-world example of the forces shaping the evolution of small bodies across the solar system. The study was published with supporting observations from Hubble, which remains one of the primary tools for tracking faint and fast-changing phenomena in solar system objects. Limitations to note include that the comet studied is described as 'tiny,' meaning its nucleus is small and difficult to resolve directly, requiring researchers to infer spin behavior from brightness variation data rather than direct imaging. The precise comet designation, full author list, journal publication status, and sample methodology details were not included in the available source content, and readers are encouraged to consult the primary NASA release for full citation details. Source: https://science.nasa.gov/missions/hubble/nasas-hubble-detects-first-ever-spin-reversal-of-tiny-comet/