Lecture 12, Astrophysics and Cosmology, Stockholm University, autumn 2026. Arthur Loureiro. Use the arrow keys to change chapter and H to hide the panels.

Stockholm
University

Lecture 12

Where are we?

Coordinates on the sky, angular resolution and the cosmic distance ladder: how we measure the distance to the Moon, the Sun, the stars and the most distant galaxies.

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Astrophysics and Cosmology, Arthur Loureiro, autumn 2026. The faint steps are the seven rungs of the distance ladder, from radar ranging to Hubble's law.