Typically, astronomers identify comets by their distinct atmospheres, or comae, and their tails, which are created as the sun vaporizes a comet's ice. These features emit a glow when sunlight bounces off dust and water droplets. As gas escapes the body of the comet, it also acts as a tiny thrus...

Source: [Phys.org](https://phys.org/news/2026-07-asteroid-unexplained-orbital-shift-dark.html)

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