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Edition 2026-10-06

SCIENCE

NASA's Astronomy Picture of the Day Highlights Sombrero Galaxy's Tidal Streams

A newly released image from NASA's Astronomy Picture of the Day (APOD) showcases the Sombrero galaxy, officially designated M104, revealing previously unseen tidal streams and s...

By NASA · 20d ago · Source: NASA

Full article

A newly released image from NASA's Astronomy Picture of the Day (APOD) showcases the Sombrero galaxy, officially designated M104, revealing previously unseen tidal streams and stellar debris that suggest a turbulent history of galactic collisions. The deep-field observation, captured over seven days in mid-2026 by astrophotographer Engelbert Vollmer in Namibia, exposes a diffuse halo extending far beyond the galaxy's prominent dust ring, which gives the galaxy its iconic hat-like appearance in shorter exposures. Within this halo, astronomers identified faint structures including a diagonal ring and multiple tidal streams — elongated trails of stars pulled from disrupted satellite galaxies. These features provide direct evidence that the Sombrero galaxy, located approximately 31 million light-years from Earth and spanning about 150,000 light-years across, has merged with smaller galaxies in its recent past. The galaxy's light requires roughly 30 million years to reach Earth, placing it in the Virgo constellation. The image, credited to Vollmer and processed by NASA, was published on October 5, 2026, as part of APOD's daily feature highlighting cosmic phenomena. The discovery underscores how extended observational exposure can uncover dynamic galactic histories hidden in plain sight.

Source transparency

Publisher
NASA
Reliability
high
Published
10/6/2026, 11:25:48 AM
Retrieved
10/6/2026, 11:25:48 AM
Relevance
80%
Confidence
85%
Read original at NASA

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