We're chasing eruptions across the solar system. This week on Planetary Radio.

I'm Sarah al-Ahmad of the Planetary Society, with more of the human adventure across our solar system and beyond.

You might picture lava rivers and fire when you think

of volcanoes, but what if they spewed snow, metal, or even methane? In this special compilation

episode, we'll explore volcanic activity around the solar system, from the basalt flows of Venus to the

mysterious heat still rising from distant dwarf planets like Eris and

Make Make. Along the way, you'll hear excerpts from my conversations and from those of

my predecessor, Matt Kaplan, who created Planetary Radio and hosted the show for 20 years.

He's now our senior communications advisor at the Planetary Society. Together with planetary

volcanologists, geochemists, and atmospheric

scientists, we'll explore the powerful processes that shape worlds, even when they're frozen or long

thought dead. Then our chief scientist, Dr. Bruce Betts, will join us for What's Up and a look at recent

June omission results from its close passes by Jupiter's Moon Io.

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the cosmos and our place within it.

Let's start where volcanism is at its most extreme, on Jupiter's Moon Io.

Back in February 2003, Matt Kaplan spoke with Dr. Rosalie Lopez, who at the time was a senior

research scientist and manager for planetary science at NASA's Jet Propulsion Laboratory.

She walked us through the relentless volcanic fury of Io, the most geologically active world

in our solar system. Rosalie, first of all, thanks for being here. You're welcome. Tell us why

...