Galactic process
Galaxy Evolution
How galaxies grow and change over cosmic time — assembling from smaller pieces, forming stars, exhausting or losing their gas, and transforming from blue, star-forming disks into red, quiescent ellipticals.
Highlights
- ›From blue star-forming disks to red-and-dead ellipticals
Examples & connections
Knowledge connections
- Associated withSpiral Galaxy
- Associated withElliptical Galaxy
- Associated withLarge-Scale Structure
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.