A discovery published in a study lead-authored by Dr. Daichi Kashino during his time at the Nagoya University Institute of Advanced Research (IAR) has been selected by Physics World, published by the Institute of Physics, as one of its Top 10 Breakthroughs for 2023. The research, which used data from the JWST, found that light from ancient galaxies was involved in the reionization of hydrogen gas around one million years after the Big Bang, or around 13 billion years ago.

