Ripples on the Cosmic Ocean

Ripples on the Cosmic Ocean

What happens in space doesn’t stay in space. Historian Dagomar Degroot joins Planetary Radio host Sarah Al-Ahmed to explore how shifting solar cycles, volcanic eruptions on Venus, Martian dust storms, and even mistaken sightings of lunar forests have influenced life, science, and society on Earth. His new book, “Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System,” reframes the Solar System as part of our cosmic environment, one that has shaped humanity’s past and will define our future.

Then, Planetary Society Director of Government Relations Jack Kiraly updates us on the latest developments in space policy, including the ongoing search for NASA’s next administrator and proposed changes to the Artemis program’s launch vehicles. And stick around for Bruce Betts, The Planetary Society’s chief scientist, in What’s Up.

Discover more at: https://www.planetary.org/planetary-radio/2025-ripples-on-the-cosmic-ocean

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Episoder(1312)

Chasing auroras with the Aurora Guy

Chasing auroras with the Aurora Guy

We are near solar maximum, a time in the solar cycle when our Sun is most active. That means more sun spots, coronal mass ejections, and auroras on worlds across our solar system. This week, Vince Led...

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Space Policy Edition: The Space Policy of a Second Trump Administration

Space Policy Edition: The Space Policy of a Second Trump Administration

Dr. Greg Autry, who served on Trump’s NASA transition team in 2016 and was nominated for the position of NASA CFO in 2020, joins the show to discuss the space policy issues facing a potential second T...

6 Sep 202459min

Europa in reflection: A compilation of two decades

Europa in reflection: A compilation of two decades

With less than two months to go until the highly anticipated launch of NASA's Europa Clipper mission, we take a look back at over twenty years of Planetary Radio episodes about Jupiter's most intrigui...

4 Sep 20241h 5min

Ramses and rockets: Commercial space adventures and the race to Apophis

Ramses and rockets: Commercial space adventures and the race to Apophis

Get up to speed on the latest in commercial space news. Mat Kaplan, the senior communications advisor for The Planetary Society, returns with an update on the fate of the Boeing Starliner astronauts, ...

28 Aug 202459min

Crickets and gastrodiplomacy: The future of space food

Crickets and gastrodiplomacy: The future of space food

As we look to build a more sustainable human presence in space, we will need to find new and innovative ways to feed our travelers. This week, we hear from Team Insecta, a group of Canadian students e...

21 Aug 20241h

An Earthling’s guide to the "Moons Symphony"

An Earthling’s guide to the "Moons Symphony"

Planetary Radio takes a melodic adventure to the Ravinia Festival in Illinois, USA, for the public premiere of the "Moons Symphony." Mat Kaplan, senior communications advisor at The Planetary Society,...

14 Aug 202453min

Hide and seek with Planet 9

Hide and seek with Planet 9

A ninth planet may be lurking in our Solar System out beyond Neptune. Caltech's Mike Brown and Konstantin Batygin join us to discuss their new paper, the latest evidence for Planet 9, and why they bel...

7 Aug 202452min

Space Policy Edition: Do we need a philosophy of space exploration?

Space Policy Edition: Do we need a philosophy of space exploration?

Why do we explore space? This is not an easy question to answer. Yet policy expert G. Ryan Faith believes there is value to be had in communal engagement with this question. While easy answers may elu...

2 Aug 20241h 8min

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