Overview

• Unprocessed Navcam and Mastcam-Z frames from NASA's Perseverance show a faint streak that independent analysts identify as interstellar object 3I/ATLAS after image stacking.
• Simeon Schmauß reported a stacked detection from Perseverance images, and Avi Loeb says Mars Reconnaissance Orbiter’s HiRISE camera also imaged the target on October 3, though those data are not public.
• NASA and the European Space Agency have not released processed results or an official confirmation, with observers citing the recent U.S. government shutdown and standard verification timelines as possible reasons.
• 3I/ATLAS passed roughly 29–30 million kilometers from Mars in early October, providing a unique observing window for rovers and orbiters.
• The object follows a hyperbolic trajectory at roughly 58–61 km/s, and observations around a late October to late November perihelion are expected to yield firmer conclusions about its nature.