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Comet 3I/ATLAS Turns Green as It Nears Sun

9/12/2025

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Summary

Story summary

The interstellar comet 3I/ATLAS may be turning green as it nears the Sun, though this is unconfirmed.
Recent lunar eclipse photos suggest an emerald hue, possibly from increased solar radiation.
Scientists observe rising cyanide and nickel outgassing, indicating a temperature-driven color change.
NASA states that 3I/ATLAS behaves like a typical comet, despite some unusual traits.
The comet will pass Mars next month and reach its closest point to the Sun on October 29.

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Story summary

The interstellar comet 3I/ATLAS may be turning green as it nears the Sun, though this is unconfirmed.
Recent lunar eclipse photos suggest an emerald hue, possibly from increased solar radiation.
Scientists observe rising cyanide and nickel outgassing, indicating a temperature-driven color change.
NASA states that 3I/ATLAS behaves like a typical comet, despite some unusual traits.
The comet will pass Mars next month and reach its closest point to the Sun on October 29.