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APOD: 2025 November 3 – A Double Helix Lunar Eclipse

APOD: 2025 November 3 – A Double Helix Lunar Eclipse

30 de julho de 2026
há cerca de 1 hora
APOD: 2025 November 3 – A Double Helix Lunar Eclipse

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A wide angle image of the night sky is punctuated by a radio telescope on the lower left. Two bands of light run through the sky: the Milky Way and zodiacal light. The bands intertwine like a double helix. Near the top is an orange orb that is a totally eclipsed moon. Please see the explanation for more detailed information.

A Double Helix Lunar Eclipse

Explanation: The image was timed to capture a total lunar eclipse -- but it came with quite a twist. First, the eclipse : the fully Earth-shadowed Moon is visible as the orange orb near the top. The eclipsed Moon 's orange color is caused by a slight amount of red light scattered first by Earth's atmosphere , adding a color like a setting Sun . Now, the twist: one of the apparent double helix bands is the Milky Way , the central disk of our home galaxy. The second band is zodiacal light , sunlight scattered by dust in our Solar System . The reason they cross is because the plane where dust orbits our Sun is tilted relative to the plane where stars orbit our Galaxy. This well-known tilt is shown dramatically in the featured wide-angle Mercator-projected picture, spanning from horizon to horizon , captured in early September from Mingantu Observing Station in Inner Mongolia , China .

Date November 3, 2025
Credit Image Credit & Copyright: Chunlin Liu
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

NASA

Agência Espacial Americana

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