Andrew Jaffe

I am a cosmologist and astrophysicist, in the Department of Physics at Imperial College London, where I am also the Director of the Imperial Centre for Inference and Cosmology. I am especially interested in the interpretation and analysis of cosmological data using principled Bayesian statistical techniques.

I have written a book, The Random Universe: How Models and Probability Help Us Make Sense of the Cosmos, released in November 2025 from Yale University Press! You can order directly from the publisher in the USA or the UK, or from your favourite local or online bookseller.

You can learn more about the book from this video I recorded.

I also occasionally express my opinions on music, politics, parenthood, or technology.

Twitter/X: @defjaf

Mastodon: @jaffe@mastodon.social

Bluesky: @defjaf.bsky.social

Threads: @defjaf

Blog: Leaves on the Line

Microblog