Pan of Arp 143

With its peculiar triangular-shaped star-birthing frenzy, the NASA/ESA Hubble Space Telescope has photographed a dramatic head-on collision between two galaxies.
The pair of interacting galaxies is known as Arp 143. The pair consists of the less conspicuous partner, NGC 2444, at left, and the twisted, star-forming spiral galaxy, NGC 2445, at right. This madness plays out against the background of far-off galaxies. A few of them are visible through the pair's interaction.