Collisional ring galaxy NGC 922 Investigation of space space star formation in the Universe

Episode 60 of the Hubblecast explores NGC 922, a galaxy that has been hit square-on by another. Ripples of star-formation are still propagating out across thousands of light-years of space over 300 million years after the collision, making it a prime example of what astronomers call a collisional ring galaxy. Find out how to view and contribute subtitles for the Hubblecast in multiple languages, or translate this video on dotSUB. Credit: ESA Hubble Visual