also known as Comet C/2024 S1 (ATLAS), was discovered on September 27 and quickly earned its nickname following speculation that it might be visible in the night sky near the end of October.

The comet, also designated C/2025 F2, would have been visible just after dark slightly north of where the sun set. Its green color would have been difficult to see with the naked eye. This might ...

Meanwhile, astronomers are keeping watch for a rare nova—a sudden explosion of a distant star—that could appear to the naked ...

NEW YORK (AP) — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked-eye spectacle. Comet SWAN, hailing from the Oort ...