A perfect 10 for the Hubble Space Telescope! This once-in-a-lifetime image shows a pair of gravitationally interacting galaxies called Arp 147. The galaxy on the left, or the "one", is relatively undisturbed, whereas the galaxy on the right, or the "zero", is a messy ring of intense star formation. Image credit: NASA, ESA and M. Livio (STScI)
Arp 147 (also known as IC 298) is an interacting pair of ring galaxies. The system was formed when a spiral galaxy (image right) collided with an elliptical galaxy. he collision produced an expanding wave of star production (shown as bright blue) traveling at an effective speed of ≳100 km s−1 and began some 40 million years ago.
NGC 3718 (Arp 214) Distance: 42.4 Million Light Years NGC 3718 and its companion NGC 3729 are physically related members of the Ursa Major galaxy cluster. The two galaxies appear to orbit each other at a projected separation of 147,000 light years. NGC 3718 seems to have a rudimentary bar and spiral structure although it is recognized as a peculiar galaxy and as such is listed within Arp's Atlas of Peculiar Galaxies. via Dark Matter on Facebook
Interacting Galaxies Arp 147 ... In this pair of gravitationally interacting galaxies called Arp 147, the blue ring-shaped galaxy's distinctive look was probably created when the galaxy on the left passed through the galaxy on the right.