October 27, 2025
The universe is brighter with you in it. Happy birthday.
Birthday · October 27, 2025
A little universe, just for you
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Selected image source ↗ APOD published October 27, 2025. Full image credits are on the original APOD entry below. A publication-date match, not a photo taken on your date. Independent of NASA.
Read the original APOD for the astronomer’s explanation and full image credits. Its text is preserved in the archive as published.
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How many bright tails does Comet Lemmon have? Two. In the featured image it appears to have three, but why? The reason is that the zigzagging brown filament is a persistent meteor train that by luck appeared in front of the distant comet C/2025 A6 (Lemmon). A meteor train is the hot gas and fine dust that remains in the Earth's atmosphere and disperses in the seconds after a bright meteor flashes by. The two bright tails are the blue ion tail stretching across the image, and the white dust tail nearer the green coma on the upper left. All real comet tails originate from the nucleus of the comet inside the coma. The image was captured a few days ago from Manciano, Italy. This week, from mid-northern locations, Comet Lemmon will remain faintly visible in the northwest sky after sunset.
Explore October 27 in other years · 31 APOD entries, 1995–2025
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