Galaxy Building Blocks
Depicts: Proto Galaxy
Copyright: Rogier Windhorst and Sam Pascarelle (Arizona State University) and NASA
These 18 small blue objects - each 11 billion light-years
from Earth - could be the seeds of some of today's
galaxies. Each clump contains several billion stars.
Astronomers believe that many of these objects have
collided and merged with each other over time to grow
into the giant and luminous galaxies seen around us today.
Last Update: 1 September 2019