The Long Cosmos is a science fiction novel by Terry Pratchett and Stephen Baxter published on 30 June 2016.

[1] It is the final installment in the award-winning five-book parallel-Earth series The Long Earth.

[2] It is the fifth book in the series published posthumously from Terry Pratchett.

The Long Cosmos further follows the adventures of Joshua Valienté and Lobsang.

This article about a 2010s science fiction novel is a stub.