Observers Notebook

Episode 226 In this episode, we’re turning our eyes toward some of the most dynamic travelers in our solar system — comets — and looking ahead to what promises to be an exciting year in the night sky: 2026. Each year brings a new lineup of these icy visitors, and with them, the chance for both amateur and professional observers to witness spectacular changes as they approach the Sun and develop tails of gas and dust. But which comets will stand out in 2026? Which ones might become visible to the naked eye — and which could surprise us? To help answer those questions, I’m joined by Carl Hergenrother, Coordinator of the ALPO Comets Section and a veteran comet discoverer himself — yes, he even has one named after him, Comet 168P/Hergenrother. Carl has spent decades studying, imaging, and analyzing comets from both professional observatories and backyard telescopes. Together, we’ll explore which comets are expected to light up the sky in 2026, how to observe them, and what role amateur astronomers can play in mo