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X-Rays, Heartbeats, and Radio Bursts Anomalies

Perhaps the most consequential anomalies involve emissions across the electromagnetic spectrum. Observations linked to the XRISM mission suggest unusual X-ray signatures associated with 31/ATLAS, stretching current models of comet–solar wind interactions.
More on XRISM: https://www.isas.jaxa.jp/en/missions/spacecraft/current/xrism.html

Layered on top of this are reports of a heartbeat-like pulse and unexplained radio signals. While evocative language dominates headlines, researchers remain focused on whether these patterns match known plasma or charge-exchange processes.

Chemistry That Raises Eyebrows

Chemical analyses have added fuel to the debate. Elevated nickel relative to iron stands out among known comets, and some researchers have suggested the possible presence of nickel tetracarbonyl, an alloy previously observed only in industrial contexts.
Harvard astrophysicist Avi Loeb described 31/ATLAS as “a Manhattan-sized interstellar object emitting an alloy never seen in nature,” a claim that remains controversial and unverified by peer review.

Sorting Signal From Speculation

NASA has firmly rejected claims that 31/ATLAS is an alien spacecraft, reiterating that its coma, nucleus, and activity are consistent with natural processes. Official statements are available via NASA’s planetary science portal: https://science.nasa.gov

Behind the headlines, teams are carefully separating genuine anomalies from observational bias. As critics note, “If you look at enough comets, some will always appear exceptional in hindsight.” Whether 31/ATLAS ultimately reshapes comet science or simply expands its margins, it is already forcing scientists to sharpen both their instruments and their skepticism.