Karl Glazebrook is a world-leading astronomer whose research has led to major advances in our understanding of how galaxies and the Universe evolve over time. His ground-breaking work includes, establishing the existence of massive galaxies only three billion years after the Big Bang, and discovering the local analogues of primordial galaxies. Glazebrook has also pioneered near-infrared surveys and developed new award-winning instrumental techniques for carrying out ultra-deep spectroscopic surveys on the world’s largest telescopes. He has also been at the vanguard in the application of new observational techniques for quantifying the effects of dark energy on the accelerating expansion of the Universe.