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Planetary Radio Episodes

For every week since 2002, Planetary Radio has visited with a scientist, engineer, project manager, advocate or writer who provides a unique perspective on the quest for knowledge about our solar system and beyond. We also showcase regular features that raise your space IQ while they put a smile on your face.

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A Helicopter for Mars and a Major LightSail Announcement

July 31, 2019 • 37:40

It will be the first flying machine on another world. Mars Helicopter Project Manager MiMi Aung shares her plans. There’s big news about The Planetary Society’s LightSail 2!

Ready to Sail! LightSail 2 Deploys its Silvery Wings

July 24, 2019 • 39:28

Join us as the little cubesat successfully unfurls its solar sail! You’ll hear from members of the LightSail 2 mission team on the morning of July 23, 2019, when the critical command was sent to the spacecraft.

We’re Sending a Flying Machine to Titan

July 10, 2019 • 56:45

NASA has given the go-ahead for Dragonfly, a flying rotorcraft that will explore Saturn’s mysterious moon Titan. Mission Principal Investigator Elizabeth “Zibi” Turtle helps us celebrate.

LightSail Takes Flight!

July 03, 2019 • 50:29

A giant SpaceX Falcon Heavy lifted off in the early hours of June 25th. One week later, the LightSail 2 solar sail was released to begin its epic mission. You’ll join the thrilling launch, meet LightSail team members and leaders of other missions, and get a solar sail update in this very special episode.

The News From Saturn-With Linda Spilker

June 26, 2019 • 48:22

It has been many months since the great Cassini spacecraft plunged into Saturn’s atmosphere and fiery death. Yet the mission lives on as the reams of data and images reveal much more of this beautiful world, its rings and its moons.

Flight by Light: A LightSail 2 Mission Preview

June 19, 2019 • 48:22

The day is almost here. With the launch of a Falcon Heavy rocket, The Planetary Society will begin its mission to prove that a tiny, orbiting spacecraft can be propelled by the light of the Sun.

A Last Visit With LightSail 2 at the Cubesat Developers Workshop

May 15, 2019 • 45:05

Mat Kaplan visits Cal Poly San Luis Obispo for a last, clean room visit with LightSail 2, the Planetary Society’s solar sailing cubesat. While there, Mat also talked to attendees at the Cubesat Developers Workshop, including the creator of the tiny “Pocket Rocket” engine for small spacecraft.

Lucy in the Sky With Asteroids

April 24, 2019 • 47:22

A rare alignment of planets and other objects will enable the solar-powered Lucy spacecraft to examine seven asteroids, six of which are among the thousands of Trojan asteroids that orbit ahead of and behind Jupiter. The mission team, include Hal Levison, Cathy Olkin and Mike Sekerak, hope to unlock secrets of our solar system’s origin through these ancient artifacts.

The Triumph of a Failed Moon Landing

April 17, 2019 • 38:00

The Beresheet lunar lander failed in the last few kilometers of its descent to the Moon. Two days later we learned that its team would try again.

Ice Worlds, A Moon Landing and Blasting an Asteroid

April 03, 2019 • 41:45

When will we return to Uranus and Neptune? Planetary scientist Amy Simon explains why a mission to the so-called ice giants is a high priority as she tells us about these mysterious, blue worlds.

China on the Final Frontier

March 06, 2019 • 51:32

With missions like Chang’e 4 on the far side of the Moon, China has firmly established itself as a leader in space exploration. Space journalist Andrew Jones helps us explore the nation’s ambitious near and long-term plans.

An Israeli Lander Launches Toward the Moon

February 27, 2019 • 48:02

Non-profit SpaceIL’s Beresheet is on its way to the Moon. Only China, the Soviet Union and the United States have safely landed there before. Host Mat Kaplan talks with SpaceIL Senior Systems Engineer Yoav Landsman, while MaryLiz Bender hears from a team member who attended the launch.

A Fond Farewell to Spirit and Opportunity

February 20, 2019 • 68:44

The Mars Exploration Rover mission was declared complete on February 13, 2019. On the very next day, MER Project Manager John Callas and Deputy Project Scientist Abigail Fraeman came to Planetary Society headquarters for an extended and emotional conversation with Mat Kaplan and Emily Lakdawalla.

Space Policy Edition: Should the U.S. be in a space race with China?

February 01, 2019 • 66:01

China's space program notched an impressive "first" last month when its Chang'e 4 spacecraft landed on the far side of the Moon. The U.S. space program, in contrast, was in the midst of an extended shutdown. Some observers expect China's growing space capability and lunar ambitions to trigger a new space race.

Asteroid Bennu’s Visitor From Earth

January 23, 2019 • 31:32

Spacecraft OSIRIS REx is now orbiting a 260-meter asteroid named Bennu. Principal investigator Dante Lauretta returns to tell us what has already been learned, and to preview the excitement that is still to come, including the probe’s descent to the surface for collection of a pristine sample.

Flying the Skies of Saturn’s Moon Titan

January 16, 2019 • 45:47

magine soaring over what may be the solar system’s most Earth-like world, if you ignore the chill. If funded, the nuclear electric-powered Dragonfly will do exactly this. Principal Investigator Elizabeth “Zibi” Turtle shares her enthusiasm.

New Horizons Flyby: Join the Celebration!

January 09, 2019 • 62:18

Join us at the Applied Physics Lab in Maryland for the New Horizons encounter with the most distant object ever visited. You’ll meet mission leaders, friends and even a rock and roll star as we dive deep into this triumph of exploration.

A Mission to Earth: OSIRIS-REx

January 02, 2019 • 37:00

Why do so many spacecraft that are headed across our solar system turn their instruments back to Earth during flybys? OSIRIS-REx was no exception. The answers come from mission scientist Vicky Hamilton

Countdown to Ultima: Alan Stern and New Horizons

December 26, 2018 • 42:27

The New Horizons spacecraft will reach faraway Kuiper Belt object 2014 MU69 in the first minutes of 2019. Will the body informally known as Ultima Thule be as mysterious and exciting as Pluto?

At the Space Settlement Summit With Former NASA Administrator Charlie Bolden

December 12, 2018 • 50:06

He led NASA for eight years, but not till he had flown on four Space Shuttle missions and enjoyed a long military career. Charlie Bolden talks with Mat about his time at the space agency and where we’re headed on the final frontier.

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