The Shackleton Signal – Joshua T. Calvert Free Audiobook

Written by Joshua T. Calvert
Read by Gary Tiedemann
Format: M4B
Bitrate: 128 Kbps

In the eternal darkness of the moon, something is calling.

When NASA’s Sentinel I satellite detects an impossible reflection and a mysterious signal from Shackleton Crater, the world is thrown into chaos. The discovery points to one chilling truth: an alien artifact lies hidden beneath the lunar surface—and it wants to be found. As China scrambles to exploit the revelation, a new moon race ignites, pushing humanity to the brink.

Thrust into the center of the storm, NASA astronaut Charlie Reid must navigate a volatile mission where science, survival, and military might collide. With the fate of humanity hanging in the balance, the question remains: what will they find—and will we survive it?

Podium Audio, June 2025
11 hours and 22 minutes