Pic of the Week: Dwarf Irregular Galaxy ESO 490-017

Posted on by onespaceman2000
Image (Credit): Image of the dwarf irregular glaxy ESO 490-017 (top center) captured by the Hubble Space Telescope. (NASA, ESA, R. Tully (University of Hawaii); Image Processing: G. Kober (NASA/Catholic University of America))

This week’s image is from the Hubble Space Telescope. It shows the dwarf irregular galaxy ESO 490-017 as a mist of stars in the upper center of the image (hence the term “irregular”). The galaxy is about 23 million light-years away and only 12,000 light years across, compared to the 100,000 light-year diameter of the Milky Way Galaxy. If you look carefully, you can spot a variety of regular galaxies in the background that blend in with the stars in the foreground.