"The "blood moon," or full lunar eclipse, occurs when the Earth's shadow is fully cast between the moon and the sun. The dark red color is the result of the light passing through the Earth's atmosphere. This acts as a sort of prism, scattering the light and causing the moon's surface to appear red."
"San Francisco's ever-present fog and low cloud cover mean that residents often miss out on astronomical events, such as 2025's supermoon and a rare view of the aurora borealis last November."
"A full lunar eclipse is relatively rare, and the next one will not arrive until 2028."
A full lunar eclipse, commonly called a blood moon, occurred early Tuesday morning and was visible in parts of San Francisco despite typical fog cover. The phenomenon happens when Earth's shadow completely blocks direct sunlight from reaching the moon, with the deep red color resulting from light passing through Earth's atmosphere and scattering across the lunar surface. This rare event was visible to over 3 billion people globally. San Francisco residents captured the eclipse through photos and videos, including footage from Grace Cathedral and the Golden Gate Bridge area. The next full lunar eclipse will not occur until 2028, making this a significant astronomical event for observers who managed to see through the city's persistent cloud cover.
Read at SFGATE
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