00:00Astronomers have discovered something unusual hiding in an old telescope image.
00:04It's Comet 28P Nujman, captured without the cloud of gas and dust normally surrounding comets.
00:11The unexpected image came from archival observations made by Japan's Subaru Telescope.
00:16The comet was detected more than 10 astronomical units from the Sun, farther than Saturn's average distance.
00:23At such a distance, it remained inactive enough for astronomers to see its nucleus directly.
00:28That matters because sunlight and heat usually trigger comets to release gas and dust.
00:32The resulting cloud, called a coma, can completely obscure the comet's surface.
00:37Subaru's massive 8.2-meter primary mirror helped researchers detect the extremely faint object.
00:44Scientists then studied how sunlight reflected from its exposed surface.
00:48Their findings showed similarities and differences between the comet and asteroids.
00:52Researchers now plan to search more public telescope archives for similar bare comets.
00:58Those discoveries could reveal how comet surfaces changed and how solar system bodies evolved.
01:04Disclosure.
01:05This video contains stock footage and content created or enhanced using AI-assisted tools.
01:09Nosmoke.
01:09This video can previously state-
01:09So it would result in two different species of UFO-
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