In this episode I break down by latitude what Kp and other data to watch for when going aurora chasing in the Northern Hemisphere. It can seem an endless sea of confusing data values relating to the aurora, but you can quickly learn what to look for to decide whether the aurora might be visible...

The solar system is huge, and it turns out that defining where it ends is tricky! Depending on the definition we use, we can come up with wildly different estimates for its size. Listen to the show for an exploration of this fascinating topic! You'll also hear next week's space weather forecast,...