July 18, 2019
Gravity Assist Podcast: Beyond Apollo with Planetary Geologist Jake Bleacher
It's been 50 years since humans walked on the moon. Now NASA is planning to return, this time to stay. What will future lunar missions look like? Why do we go back at all?
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June 28, 2019
Gravity Assist Podcast: Your Moon Questions Answered
Why do we see only one face of the Moon? What would happen to Earth if the Moon didn't exist? We dive into questions you asked on social media.
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June 21, 2019
Gravity Assist Podcast: The Moon Rocks! With Barbara Cohen
Learn how Moon rocks can reveal all kinds of information about our nearest neighbor, as NASA prepares to send astronauts to the Moon and on to Mars.
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June 13, 2019
Gravity Assist Podcast: Mapping the Moon, with Noah Petro
The Lunar Reconnaissance Orbiter, launched 10 years ago this month, has made groundbreaking discoveries about the Moon, and will pave the way for future human exploration with NASA's Artemis mission.
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June 6, 2019
Gravity Assist Podcast: Why So Many Craters on the Moon? With David Kring
NASA's Artemis program will send astronauts to the lunar south pole by 2024, where there is a giant impact crater. Learn how craters teach us about the history of both the Moon and Earth.
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May 30, 2019
Gravity Assist Podcast: Where's the Water on the Moon? With Jen Heldmann
The Moon has a large supply of water that could be useful in future human exploration, says NASA scientist Jennifer Heldmann.
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May 9, 2019
Gravity Assist Podcast: Why Do We Have a Moon? With Robin Canup
Learn about how the Moon formed in this conversation with Robin Canup of the Southwest Research Institute.
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May 2, 2019
Gravity Assist Podcast: Where Could We Go on the Moon? With Steve Mackwell
With NASA planning to send astronauts to the Moon by 2024, Steve Mackwell chats about the Moon’s exciting unexplored areas.
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April 24, 2019
Gravity Assist Podcast: Buying a Ride to the Moon Through Commercial Partnerships, with Steven Clarke
Steven Clarke, the Deputy Associate Administrator for Exploration at NASA, talks about NASA’s plans to partner with companies for delivering new instruments and technology demonstrations to the Moon.
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April 11, 2019
Gravity Assist Podcast: Meet NASA Administrator Jim Bridenstine
NASA’s got big plans to send people to the Moon, and then on to Mars. What are we going to do at the Moon?
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April 1, 2019
Gravity Assist Podcast: Season 3 Trailer
What’s so special about our Moon? Join Jim Green, NASA’s chief scientist, for a podcast season that dives into the Moon’s history and mysteries, as well as NASA’s plans to send astronauts there by 2024.
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December 11, 2018
Gravity Assist: The Sun’s Mysteries with Thomas Zurbuchen
Thomas Zurbuchen, the Associate Administrator of NASA’s Science Mission Directorate, joins NASA Chief Scientist Jim Green to discuss the mysterious we still need to solve about the Sun, and more!
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September 26, 2018
Gravity Assist: Planetary Defense and Oumuamua with Kelly Fast
NASA Chief Scientist Jim Green sits down with Dr. Kelly Fast, a planetary astronomer to discuss planetary defense and Oumuamua.
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September 11, 2018
Gravity Assist: Sunspots and Solar Flares with Alex Young
NASA Chief Scientist Jim Green sits down with solar scientist Alex Young to discuss the Sun’s powerful explosions.
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August 15, 2018
Gravity Assist: Mars Dust Storm with Melinda Kahre.
Listen in as NASA Chief Scientist Jim Green discusses the Mars dust storm with a dust storm expert, Melinda Kahre.
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August 1, 2018
Gravity Assist: Exoplanet Hunting with Jon Jenkins
Listen to Chief Scientist Jim Green and a co-investigator on the Kepler and TESS missions, Jon Jenkins, discuss exoplanet-hunting and all the amazing discoveries Kepler has made.
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July 17, 2018
Gravity Assist: Asteroid Hunting with Lindley Johnson
NASA has been on the lookout for any asteroid that could cause our planet harm and, in the thousands of objects found, determined that none poses a threat to Earth.
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July 3, 2018
Gravity Assist: Exploring Mars with Spirit and Opportunity with Steve Squyres
NASA’s Spirit and Opportunity rovers were only supposed to rove around Mars for 90 days. Listen in with Steve Squyers from Cornell University as he recounts the amazing discoveries we’ve made about the Red Planet because of these two long-lived rovers.
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May 2, 2018
Gravity Assist: Mars and InSight with Bruce Banerdt
With its seismometer and heat probe instruments, InSight will investigate the deep dynamics of Mars, helping scientists discover what lies within its core and learn more about how rocky bodies form throughout the solar system.
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April 12, 2018
Gravity Assist: TESS & Exoplanets with Martin Still
On Monday, April 16th, NASA is scheduled to launch its newest exoplanet hunter: the Transiting Exoplanet Survey Satellite (TESS).
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March 1, 2018
Gravity Assist: Explorer 1 & Jim Green’s ‘Gravity Assist’
The year was 1958; the space race was on. NASA’s first space satellite, Explorer 1, launched a Geiger counter and miniature tape recorder into space that registered astonishingly high radiation levels above Earth. This discovery gave humanity its first glimpse of the Van Allen radiation belts, named for James Van Allen.
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February 7, 2018
Gravity Assist: Science & Science Fiction with Andy Weir
NASA’s Jim Green and bestselling author Andy Weir explore the fascinating intersection of science and science fiction.
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January 31, 2018
Gravity Assist: The Kuiper Belt with Alan Stern
In this episode of Gravity Assist, Jim Green talks with New Horizons Principal Investigator Alan Stern about what we’ve learned about Kuiper Belt object 2014 MU69.
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January 24, 2018
Gravity Assist: Pluto with Alan Stern
In this episode of Gravity Assist, Jim Green talks with New Horizons Principal Investigator Alan Stern of the Southwest Research Institute about what the July 2015 flyby of Pluto revealed about this mysterious and diverse world.
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January 17, 2018
Gravity Assist: Ice Giants (Uranus & Neptune) with Amy Simon
n this episode of Gravity Assist, NASA’s Jim Green and Amy Simon discuss Uranus, Neptune, and Neptune’s intriguing moon – Triton -- and what we still have to learn about these mysterious bodies.
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January 10, 2018
Gravity Assist: Saturn with Linda Spilker
With me today is Dr. Linda Spilker from NASA's Jet Propulsion Laboratory. She's the project scientist for our Cassini Mission, which as everyone knows, had a recent spectacular finale at Saturn.
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January 3, 2018
Gravity Assist: Jupiter with Jared Espley
As large as 1,000 Earths, Jupiter is the heavy hitter of the solar system. Even its Great Red Spot is larger than Earth, yet it’s shrinking! In this episode of Gravity Assist, Planetary Science Director Jim Green talks with Jared Espley of NASA’s Juno mission.
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December 20, 2017
Gravity Assist: Mars with Bruce Jakosky and Michael Meyer
With Jim Green today is the “man about Mars,” Bruce Jakosky from the University of Colorado. Bruce is the principal investigator of NASA's MAVEN mission. Joining them is Michael Meyer the lead Mars scientist at NASA Headquarters.
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December 13, 2017
Gravity Assist: The Moon with Sarah Noble
Jim Green is joined by lunar expert Sarah Noble to discuss how the Moon was formed, lava tubes and moonquakes, the “dark side of the Moon,” and mysteries we have yet to solve about Earth’s nearest neighbor.
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December 6, 2017
Gravity Assist: Earth with Tom Wagner
NASA not only seeks to unravel the secrets of the solar system and the universe, we have a robust program to better understand how Earth works as a system, how it’s changing, and to assist when natural disasters like hurricanes and earthquakes occur.
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November 29, 2017
Gravity Assist Podcast, Venus with David Grinspoon
The next stop on our virtual tour is Venus, the closest planet to Earth and the hottest planet in our solar system, with surface temperatures scorching enough to melt lead.
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November 22, 2017
Gravity Assist Podcast, Mercury with Faith Vilas
Our virtual tour of the solar system continues with Mercury, the closest planet to the Sun. Since it’s tough to observe Mercury except at dawn or twilight, most of what we know about Mercury is from NASA’s Mariner 10 and MESSENGER missions.
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November 15, 2017
Gravity Assist Podcast, The Sun with Nicky Fox
We start our “Gravity Assist” virtual tour of the solar system with – where else – the Sun! Jim is joined by Project Scientist Dr. Nicky Fox of the Johns Hopkins University Applied Physics Lab to talk about our fascinating star and NASA’s upcoming Parker Solar Probe—a mission to “touch the Sun.”
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November 2, 2017
NASA’s New “Gravity Assist” Podcast Debuts Nov. 15, 2017
Hi, I'm Jim Green, NASA's director of planetary science. I'm excited to tell you about a new podcast series. It's called NASA's Gravity Assist. Please join me as I talk with some of the greatest planetary scientists of our time.
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