Some galaxies, like the Milky Way, are veritable star nurseries, giving birth to at least one baby star every year. Others are barren. Until now, astronomers haven’t been sure why.
A new study shows that a galaxy’s fertility may depend on galactic “rain.”
“We know that precipitation can slow us down on our way to work,” says Mark Voit, professor of physics and astronomy at Michigan State University. “Now we know it can also slow down star formation in galaxies with huge black holes.”
A new study shows that a galaxy's fertility may depend on galactic "rain."
