If you’ve seen posts claiming a celestial "smiley face” will light up the night sky over Christmas, don’t get your hopes up — it’s not actually happening. Viral photos circulating on social media, ...

May’s flower moon rose in twilight on Friday, setting the stage for a rare second full moon — a blue moon — later in the ...

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a "micro" new moon. A super “beaver moon” rises behind Monte Prena in Italy’s ...

Tonight is "blue moon Eve" (see the May 31 entry for more details). Late tonight, look toward the southeast to see one of the ...

Viral social media posts claiming a celestial "smiley face" will appear on Christmas are false. The "smiley face" illusion is an optical effect caused by the alignment of a crescent Moon and two ...