Marcos Pellejero
Cosmologist working on large-scale structure, simulations, and DESI-related analyses, contributing expertise on baryon acoustic oscillations, dark energy, and cosmological simulations.
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Apr 3, 2026 • 25min
The Dark Energy Mystery: What We Learned at the Royal Observatory Edinburgh
Marcos Pellejero, a cosmologist working on large-scale structure, simulations, and DESI analyses. He tours the Royal Observatory, explains baryon acoustic oscillations as a cosmic ruler, dives into N-body simulations and machine-learning emulators, and discusses whether DESI hints that dark energy may not be constant.
