For our fiirst lectire of 2025, Dr Michael Tremmel boggled many minds by telling us about the massive galaxies and black holes discovered by the James Webb Space Telescope (JWST) unexpectedly early in the universe’s history, giving an insight into how astronomers go about observing massive black holes at such early times, JWST’s ongoing discoveries in this field, and the challenges and uncertainties they create.
Michael’s expertise is in using large-scale cosmological hydrodynamic simulations to study the formation and evolution of galaxies and supermassive black holes..
Main image : James Webb Space Telescope (JWST) has made ground-breaking discoveries. This is an artist’s impression of star-bursting galaxies in the early universe, being fed the raw material for star formation through filaments in the cosmic web. (Image credit: Aaron M. Geller, Northwestern, CIERA + IT-RCDS)
