Variable stars are stars whose brightness changes over time, either because the star itself is changing or because something, such as a companion star, temporarily blocks part of its light. These changes may follow a regular cycle, vary only slightly, or involve dramatic brightening and fading over weeks, months, or years.

Lyn Smith FRAS explains how to safely observe the Sun, our closest star, and record its activity.

Dirk Goës, SCS Committee member, presented this short talk on Monday 1st June 2026. It is based on his article of the same name, which can be read here. The GALAH Survey: Searching for the Universe's missing lithium.

The Night is not lost: the future of Dark Skies in Australia.