Figure Caption:

Hubble Space Telescope image of the galaxy cluster "Abell 2218"
used by Ellis and collaborators in their systematic search
for intrinsically faint distant star-forming systems. The
image pair (inset) represents the magnified result of a single source
gravitationally magnified more than 30 times by Abell 2218 and
viewed at a distance of 13.4 billion light years. The intriguing
object contains only a few million stars, far fewer than
a mature galaxy and Ellis and coworkers believe it is
very young. Such young star-forming systems of low mass at early
cosmic times are thought to assemble to form the mature galaxies we
see today.