By incorporating the data of individual stars into whole-galaxy models, Caltech researchers can look at the actual effects of star feedback—how radiation from stars "pushes" on galactic matter—in the galaxies they study.
The Nuclear Spectroscopic Telescope Array, or NuSTAR, sees the high-energy X-rays emitted by the densest, hottest regions of the universe. Professor Harrison will describe NuSTAR's unlikely journey and share some of its remarkable results.
Where do you go to look at the stars? Away from city lights, certainly. But if you're serious about peering far out into space, to the observable edges of our universe, at submillimeter wavelengths, you have to do a little better than that.