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Fosalba & Gaztañaga 2021, MNRAS

Cosmological models are built on a simple, century-old idea – but new observations demand a radical rethink

New deep-space discoveries suggest the Universe is lumpy and lopsided. But if matter is distributed unevenly, we’ll have to rethink the simple geometry used in cosmological models.
ESA/Webb, NASA & CSA, A. Martel

Why is the sky dark at night? The 200-year history of a question that transformed our understanding of the Universe

The darkness of the night sky seems so obvious as to need no explanation – yet it has intrigued and baffled scientists for centuries.