This week we bask in the glow of the bright Sturgeon Moon, trace the shifting positions of planets from twilight to dawn, and watch as a few late-season meteors streak across the sky.

Later in the show, we journey beyond Neptune to meet a newly discovered distant object named Ammonite—a cosmic fossil whose strange orbit may upend one of the most compelling mysteries in astronomy: the existence of Planet Nine.

We'll explore how this icy world fits into a tiny family of ultra-distant objects known as sednoids, and why its misaligned path challenges the idea of a hidden giant planet at the edge of our solar system.

For more episodes and resources for backyard astronomers, visit  ...