火星探査機「キュリオシティ」が空飛ぶ円盤を激撮! NASA公式サイトに掲載された地球外UFO画像に騒然

Overview

On 22 February 2026 NASA’s Curiosity rover transmitted a raw image from the Elysium Planitia region that quickly spread across social‑media platforms. The picture shows a dark, roughly circular silhouette hovering above a low‑lying hill near Gale Crater. Because the image was posted on NASA’s official “Mars Exploration” gallery, the visual has been framed by many online communities as the first confirmed photograph of an extraterrestrial UFO on another planet. NASA, however, has emphasized that the object remains unidentified and that no claim of alien technology is being made.


Image Details

The raw file (NASA Mars Exploration ID 1553665) was captured by Curiosity’s Mast Camera (MastCam) during a routine sky‑ward exposure. In the original, the object appears as a dark disc‑like shape about 1 meter across, positioned roughly 30 meters above the surface. The image’s metadata indicates a solar elevation of 27°, a camera exposure of 0.5 seconds, and a gain setting typical for low‑light Martian twilight. NASA’s release includes a higher‑resolution zoom that highlights the object’s smooth outline, prompting speculation that it could be a “classic flying‑saucer” silhouette.


Scientific Assessment

NASA’s Planetary Science Division issued a brief statement, noting that the feature “does not correspond to any known instrument artifact or atmospheric phenomenon.” Dr. Megan Kelley, senior imaging scientist for the Curiosity mission, explained that the team is conducting a “systematic review of the raw telemetry, calibration files, and surrounding frames” to rule out possibilities such as a stray lens flare, a dust‑laden vortex, or a transient cloud shadow.

Past Mars missions have produced similar ambiguous sightings—most famously the “Mars‑MIR” dust devil images captured by the Spirit rover in 2004, later identified as atmospheric dust spirals. Experts from the University of Arizona’s Lunar and Planetary Laboratory, including Prof. James Michaels, caution that “without corroborating data—such as multi‑angle imaging, spectral analysis, or repeat observations—classifying the object as an artificial craft would be premature.” The scientific community therefore treats the observation as an anomalous visual pending further investigation.


Community Reaction

The image’s appearance on NASA’s official site has ignited vigorous discussion among UFO‑research groups and paranormal forums. Japanese site Web‑Mū, which specializes in “world mysteries,” published an analysis that interprets the shape as a “classic hemispherical UFO” and suggests it could indicate “extraterrestrial activity on Mars.” The article has been shared widely on Twitter and Facebook, often accompanied by speculative captions.

Conversely, mainstream media outlets such as Space.com and The Planetary Society’s newsletter have reported the story with a more measured tone, highlighting NASA’s ongoing “data‑validation process” and reminding readers that extraordinary claims require extraordinary evidence. The divergent narratives illustrate the tension between public fascination with unidentified aerial phenomena (UAP) and the rigor of planetary science.


Next Steps

NASA plans to task Curiosity’s navigation cameras and the rover’s upcoming Perseverance mission to capture additional images of the same sky sector during the next Martian sol. If the object reappears, scientists will be able to compare spectral signatures and motion vectors, which could either confirm a natural atmospheric occurrence or reveal an artificial source.

Until such data are available, the scientific consensus remains that the “Mars UFO” is an unexplained visual anomaly rather than proof of alien technology. The episode underscores the importance of transparent data sharing and careful peer review when interpreting ambiguous extraterrestrial observations.