Get Google Newsfeed on the topic: New stars are made at center of galaxy and it enlarges the galaxy's central bulge.

Galaxy Compact Group 87 1 Venus2 Titan Moon of Saturn Neptune 2 Evolution of Planet Chiron Comet Asteroid Minor Planet Volcanos on Mars Nebula NGC604 Volcanos on Mars Nimbostratus Clouds Caloris Craterd Mercury Hubble Image of Nebula 2 Altocumulus Clouds 2 Cumulus Clouds 3 Viking 2 Lander Image of Mars Supernova Rings of the Saturn Asteroid Eros and Earth Mars Probe Mariner 9 Galaxy M101 Pileus Clouds Volcanic Rocks Barberton Corona of Sun Star Cluster NGC 1850 Mariner 4 View of Mars Moon of Mars 1 Galaxy M1300 Crater on Mars Europa Moon of Jupiter Galaxy Compact Group 87 2 Star Cluster 2 Ancient Supernova Venus Meteor burning thru open lense Zanskar High Himalayas Hot spots and plume tracks Eskimo Nebula

Brains.mobi

Going with the flow: Gas flows along bars into the heart of barred spirals, where it makes new stars and enlarges the galaxy's central bulge.