The latest news about astronomy, space and the NASA/ESA Hubble Space Telescope presented in High Definition is only for devices that play High Definition video (not iPhone or iPod). To watch the Hubblecast on your iPod and/or iPhone, please download the Standard Definition version also available on iTunes.
December 6th, 2012
Episode 8 of 54 episodes
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.