NGC 3239 is an irregular galaxy shown here
near the center of this lovely field of galaxies in the galaxy
rich constellation Leo. At a distance of only 25 million
light-years and about 40,000 light-years across, it dominates
the frame, sporting a peculiar arrangement of structures, young
blue star clusters and star forming regions, suggesting that NGC
3239 (aka Arp 263) is the result of a galaxy merger.