APOD: 2026 November 11 – NGC 4449: Small Galaxy, Big Impact
NGC 4449: Small Galaxy, Big Impact Explanation: Don’t judge a galaxy by its size.
Key points
- Random APOD Generator Yesterday’s Image APOD: 2026 November 9 – Rigel and the Witch Head Nebula Tomorrow’s Image.
- NGC 4449 and similar dwarf galaxies are missing more oxygen than models predict.
- Turns out these tiny galaxies may play a big role in spreading heavy elements — the building blocks of stars, planets, and life — throughout the universe!
Tomorrow’s picture: small but mighty Date November 10, 2026 Credit & Copyright Roberto Ortu Authors & editors: Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe A service of: ASD at NASA / GSFC, NASA Science Activation & Michigan Tech.
Today’s image shows one such dwarf galaxy, NGC 4449, captured by the Hubble Space Telescope.
Additional details
- Such a Saturn ian eclipse, more formally called an occultation, was visible in early 2025 along a small swath of Earth — from Greenland through central Europe and into northern Africa.
- Our home galaxy, the Milky Way, is about 100,000 light years across.
- They are also the most common type of galaxy in the whole universe.
- Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
- The smallest galaxies, called dwarf galaxies, are about 1/10th the size of the Milky Way and only contain a few billion stars.
How this summary was made: extractive summary — built from the sources' own reporting. It is drawn only from the reporting of the sources listed below — read the originals for full detail. How we summarize →
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