Hubble Space Telescope image of NGC 922, a ring galaxy formed by a galactic collision 300 million years ago. The image reveals a complex ring structure and numerous X-ray emitting knots, likely massive black holes, a surprising discovery given the galaxy's composition. NGC 922 is located 150 million light-years away in the constellation Fornax.
Astronomy Picture from 17/12/2012
NGC 922: Collisional Ring Galaxy
Source: https://apod.nasa.gov/apod/ap121217.html
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