Image Credit & Copyright: NASA/ESA Hubble Space Telescope.
What a view we have here! This visually busy region of sky is known as the Antlia Dwarf Galaxy (ADG) and it’s over 4 million light years away in either the Antlia or Local group of galaxies (that’s still up in the air). This particular dwarf is just a handful of light years in diameter and has only about 1-3 million stars in it, of which we’re only seeing the brightest members. Compared to the 1-2 hundred billion stars in our 100,000 + light year diameter Milky Way, you can see why they call em dwarfs!
It’s believed that this dwarf galaxy and the nearby barred spiral galaxy NGC 3109 are gravitationally interacting because of the formation and disruption of the two objects as well as the fact that they are traveling in roughly the same direction at roughly the same velocity…
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