  With stunning clarity, JWST has revealed the Universe's first billion years.
The scientific community is analyzing a wealth of JWST imaging and
spectroscopic data from that era, and is in the process of rewriting the
astronomy textbooks. Here, 1.5 years into the JWST science mission, we provide
a snapshot of the great progress made towards understanding the initial
chapters of our cosmic history. We highlight discoveries and breakthroughs,
topics and issues that are not yet understood, and questions that will be
addressed in the coming years, as JWST continues its revolutionary observations
of the Early Universe. While this compendium is written by a small number of
authors, invited to ISSI Bern in March 2024 as part of the 2024 ISSI
Breakthrough Workshop, we acknowledge the work of a large community that is
advancing our collective understanding of the evolution of the Early Universe.
