Amid a flurry of interest in newly declassified US government UFO files, a Chinese researcher has expressed intrigue in an apparent video of a fast-moving, human-shaped object.
Zhang Nan, a Beijing-based researcher into unidentified anomalous phenomena (UAP), said he was particularly fascinated by a nearly five-minute video, captured by a sky-facing US military infrared sensor in Florida in 2020.
In the footage labelled “NAG UAP 1 Jun 20”, a humanoid-like shape hovered for a long time before abruptly moving to a distant location outside the frame.
“Assuming this wasn’t a sensor glitch and that we are looking at an actual, instantaneous displacement, AI-assisted analyses suggest the object’s acceleration could have exceeded 600g – or 600 times the force of gravity on Earth’s surface,” Zhang said.
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To put that into perspective, human pilots typically black out at around 12g, and the most durable drones max out near 30g, he said.
“A manoeuvre surpassing 600g is far beyond the limits of any known modern aircraft or living organism.”
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However, given that the object lacked any visible propulsion system and appeared to change shape as it moved, he said that an object exceeding 600g “cannot be completely ruled out”.
While Zhang said he found the latest batch of UFO files from the US Department of Defence far more intriguing than the older, grainier images the Pentagon previously released, he pointed out a major hurdle for the scientific community: a lack of hard data.

