Harold Jacoby

author

Harold Jacoby

1865–1932

A Columbia astronomer who helped bring the night sky within reach of general readers, he wrote clear, approachable books on astronomy and navigation at a time when both subjects were rapidly expanding. His career blended research, teaching, and public explanation in a way that still feels refreshingly direct.

1 Audiobook

Practical Talks by an Astronomer

Practical Talks by an Astronomer

by Harold Jacoby

About the author

Born in New York City in 1865, Harold Jacoby studied at Columbia, earning his A.B. there in 1885 and later completing his Ph.D. He went on to spend most of his professional life at Columbia, where he taught astronomy and became a professor, while also taking part in serious observational work, including an eclipse expedition to West Africa around 1889–1890.

Jacoby is remembered not only as an astronomer but also as a gifted explainer. Alongside his academic work in positional astronomy, he wrote books that opened scientific ideas to non-specialists, including works on astronomy and navigation. That mix of scholarship and clarity helped make technical subjects feel usable and alive for everyday readers.

He died in 1932, leaving behind both scientific work and a body of writing shaped by patience, precision, and a real desire to teach. For listeners coming to his books now, part of the appeal is exactly that balance: expert knowledge presented in a calm, human voice.