#observational astrophysics

Tagged observational astrophysics · show all articles

A millimetre-wave telescope standing inside its white gel-coat ground shield in bright high-altitude daylight, one shield panel still rising on its winch line with a narrowing wedge of daylit ground visible through the gap

Reading the Oldest Light: How a Temperature Map Becomes a Cosmology

The cosmic microwave background is a surface, a spectrum and a statistic before it is a set of parameters. Each step in that chain carries its own assumptions, and the last one is currently in dispute.

By Brecht Corbeel · August 8, 2026 · 17 min read

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