Goodreads Choice Awards 2025

Join the Goodreads Author Program

Are you Hartmut Warm, author of the books below?
Signature of the Celestial Spheres by Hartmut Warm Die Signatur der Sphären by Hartmut Warm Die rettenden Verse noch ungeschrieben by Hartmut Warm Die Erde dankt Motoren die schweigen by Hartmut Warm Signature of the Celestial Spheres by Hartmut Warm


To join the author program as Hartmut Warm, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads