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Birthday · March 15, 2024

Portrait of NGC 1055

March 15, 2024

On the day you were born, another consciousness opened inside the cosmos and began taking notes.

Portrait of NGC 1055

A little universe, just for you

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APOD published March 15, 2024. Credit: Dave Doctor. A publication-date match, not a photo taken on your date. Independent of NASA.

Behind the image

Portrait of NGC 1055

Original APOD · March 15, 2024

Big, beautiful spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the aquatically intimidating constellation Cetus. Seen edge-on, the island universe spans over 100,000 light-years, a little larger than our own Milky Way galaxy. The colorful, spiky stars decorating this cosmic portrait of NGC 1055 are in the foreground, well within the Milky Way. But the telltale pinkish star forming regions are scattered through winding dust lanes along the distant galaxy's thin disk. With a smattering of even more distant background galaxies, the deep image also reveals a boxy halo that extends far above and below the central bulge and disk of NGC 1055. The halo itself is laced with faint, narrow structures, and could represent the mixed and spread out debris from a satellite galaxy disrupted by the larger spiral some 10 billion years ago.

Image credit: Dave Doctor

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