This week we kick things off with a deceptively simple listener question: What exactly is mass? From beach balls to black holes, we explore how mass shapes the universe, and our understanding of gravity.

Then we turn our eyes to the night sky, where the Full Buck Moon rises low on the horizon, showing off the inspiring Moon Illusion. We’ll cover what planets are visible, what to look for in the coming nights, and keep in mind, meteor shower season is right around the corner.

Finally, we journey to the outermost reaches of the solar system, to the Kuiper Belt and the distant, mysterious Oort Cloud. These frozen zones may hold the keys to our cosmic past and are home to icy relics like Comet Bernardinelli–Bernstein, one of the largest comets ever discovered.

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