Ka Chun begins with a story on active galaxies. An active galaxy has a black hole at its center which pulls galactic material inwards towards the central black hole. This central engine radiates out a lot of energy forming bright quasars with powerful jets of particles and energy.
Links to Ka Chun's story:
60 Minutes in Space - Scientists from the Space Sciences Department at the Denver Museum of Nature & Science take you "behind the stories" using the best images and animation available to help understand the latest developments. Click here to view the full-length video of March’s 60 Minutes in Space.