The interstellar comet 3I/ATLAS has recently garnered increased public interest following the release of new videos and images that have sparked speculation about its potential rotation. Viewers, particularly space enthusiasts, have noticed possible shifting shapes and brightness changes in the comet's coma, leading to discussions about whether the comet is indeed spinning. Online posts include comparisons to previous imagery captured by space missions, notably from the ESA ExoMars Orbiter, although these claims have yet to be substantiated by NASA or ESA. As 3I/ATLAS embarks on its unique journey through our solar system, experts are eagerly anticipating high-resolution images that may help clarify these observations. Scientists remain cautious, reminding the public that without validated data, any claims of rotation are just speculation.
Since its discovery on July 1, 2025, by NASA’s ATLAS survey telescope in Chile, the comet has fascinated astronomers due to its hyperbolic trajectory, indicating it is an interstellar object not bound to the Sun. It is the third known interstellar comet, following 1I ʻOumuamua and 2I Borisov. At speeds exceeding 210,000 kilometers per hour, the comet has already passed its closest approach to the Sun and can currently be seen in the early morning sky before dawn, although visibility requires a telescope.
In addition to its stunning display, 3I/ATLAS is significant for scientific research. Astronomers speculate that it may contain compounds typical of distant celestial objects, such as high levels of carbon dioxide, indicative of formation in extremely cold regions far from suns. The comet's passing near Mars in early October provided additional data for planetary scientists, who are eager to study the materials from such a unique celestial visitor. As interest in 3I/ATLAS continues to grow, the scientific community remains vigilant for new insights that could reshape our understanding of interstellar objects and their composition.