Move over billionaires. We're doing science this week on planetary radio.

Welcome. I'm Matt Kaplan of the Planetary Society with more of the human

adventure across our solar system and beyond. I'm not here to talk about buying a

ticket to ride along with Jeff Bezos and Richard Branson, but I would like to

talk about how their new suborbital space vehicles may usher in a new era for

space science. Alan Stern is a big believer in this opportunity. In fact, he

looks forward to his own flight that will include two experiments. The New

Horizons principal investigator will also give us an update on his spacecraft

that is well-passed Pluto and Aracoth. New Horizons recently looked even

further out toward Voyager. Have your days been dominated by the Olympics?

Bruce Betz is right there alongside you, which explains today's Olympics

themed WhatsApp. A big thank you to everyone who had such nice things to say

about last week's long and fascinating conversation with Andy Chacon

about Apollo and Artemis. So guess what's on top of the July 30th edition of

the downlake? That's Apollo 15 commander Dave Scott at the

joystick of the first lunar roving vehicle. You'll find it at planetary.org

slash downlake along with these headlines. NASA has decided Europa Clipper will

ride a SpaceX Falcon Heavy to Jupiter's Moon. The decision came after Congress

relaxed a requirement that the spacecraft travel on the giant space launch

system rocket that is still headed toward its first launch.

Astronomers think they found water vapor in the atmosphere of Europa's

neighbor Ganymede, which makes the plan 2022 launch of the European Space

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