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September 27, 2019
Just like earthquakes help scientists figure out what's going on inside our home planet, moonquakes have taught scientists a lot about the interior of the Moon.
September 12, 2019
Early in its history, the Moon was molten, with “fire fountains” erupting from its surface. How did the Moon cool down and become the quiet, cratered world we know today? NASA’s Chief Scientist Jim Green chats with NASA’s Deputy Chief Scientist Dave Draper about the Moon’s volcanic past and what we have learned from Apollo lunar samples.
August 23, 2019
From lunar samples brought back in the Apollo program, scientists have figured out that the Moon once had a shield around it called a magnetosphere, just like the Earth has today. As NASA prepares to send humans to the Moon, and eventually on to Mars, scientists are exploring the Moon's magnetic past.
July 18, 2019
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?
June 28, 2019
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.
June 21, 2019
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.
June 13, 2019
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.
June 6, 2019
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.
May 30, 2019
The Moon has a large supply of water that could be useful in future human exploration, says NASA scientist Jennifer Heldmann.
May 9, 2019
Learn about how the Moon formed in this conversation with Robin Canup of the Southwest Research Institute.
May 2, 2019
With NASA planning to send astronauts to the Moon by 2024, Steve Mackwell chats about the Moon’s exciting unexplored areas.
April 24, 2019
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.
April 11, 2019
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?
April 1, 2019
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.
December 11, 2018
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!
September 26, 2018
NASA Chief Scientist Jim Green sits down with Dr. Kelly Fast, a planetary astronomer to discuss planetary defense and Oumuamua.
September 11, 2018
NASA Chief Scientist Jim Green sits down with solar scientist Alex Young to discuss the Sun’s powerful explosions.
August 15, 2018
Listen in as NASA Chief Scientist Jim Green discusses the Mars dust storm with a dust storm expert, Melinda Kahre.
August 1, 2018
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.
July 17, 2018
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.
July 3, 2018
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.
May 2, 2018
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.
April 12, 2018
On Monday, April 16th, NASA is scheduled to launch its newest exoplanet hunter: the Transiting Exoplanet Survey Satellite (TESS).
March 1, 2018
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.
February 7, 2018
NASA’s Jim Green and bestselling author Andy Weir explore the fascinating intersection of science and science fiction.
January 31, 2018
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.
January 24, 2018
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.
January 17, 2018
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.
January 10, 2018
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.
January 3, 2018
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.
December 20, 2017
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.
December 13, 2017
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.
December 6, 2017
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.
November 29, 2017
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.
November 22, 2017
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.
November 15, 2017
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.”
November 2, 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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