3I/ATLAS changed color again and what is it this time? Interstellar comet shocks astronomers with new anomaly. Here's what triggered the change and ho

[holman khan]

3I/ATLAS changed color again and what is it this time? The interstellar comet 3I/ATLAS has once more surprised astronomers by showing a new blue hue after a recent brightening event. This marks the third recorded color change since its discovery in July 2025. Scientists believe the comet’s changing colors, including red, green, and now blue, are linked to the release of gases and dust as it moves closer to the Sun. 3I/ATLAS, an interstellar comet traveling at more than 210,000 k ..

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