Split view showing a normal spiral galaxy around our local universe now (left) and when it was young (right).
Image credit: NASA/JPL-Caltech/STScI
Galaxies once thought of as voracious tigers are more like grazing cows, according to a new study using NASA's Spitzer Space Telescope.
Astronomers have discovered that galaxies in the distant, early universe continuously ingested their star-making fuel over long periods of time. This goes against previous theories that the galaxies devoured their fuel in quick bursts after run-ins with other galaxies. (read more)