The points of issue
First edition is the Tor trade paperback original (US, July 3, 2018), in wraps, first printing identified by a number line ending in 1, with the original printed cover price. The first edition is a trade paperback, not a hardcover. Won the 2018 Nebula, 2019 Hugo, and 2019 Locus for Best Novel; first Lady Astronaut novel.
Is this the true first?
True first is the Tor trade paperback original (2018); no hardcover first. Confirm the trade paperback first printing by its number line.
Telling it from reprints & book-club editions
No book-club edition. The trap is expecting a hardcover; the trade paperback first printing is the first.
Frequently asked questions
Is my copy of The Calculating Stars a first edition?
Look for these first-edition points: First edition is the Tor trade paperback original (US, July 3, 2018), in wraps, first printing identified by a number line ending in 1, with the original printed cover price. The first edition is a trade paperback, not a hardcover. Won the 2018 Nebula, 2019 Hugo, and 2019 Locus for Best Novel; first Lady Astronaut novel.
How do I tell the first printing from a later one?
Check the copyright page for the publisher's first-printing convention and confirm the points above. True first is the Tor trade paperback original (2018); no hardcover first. Confirm the trade paperback first printing by its number line.
Is the book-club edition the same as the first?
No book-club edition. The trap is expecting a hardcover; the trade paperback first printing is the first.
I have a first edition of The Calculating Stars — what should I do?
If you're clearing books, New Mexico Literacy Project offers free pickup in Albuquerque, any condition, and makes sure collectible copies aren't lost. To sell, see the author's collecting guide. Either way, nothing valuable ends up in a landfill.