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National Aeronautics and Space Administration (NASA)

Gravity Assist

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.

NASA’s New “Gravity Assist” Podcast Debuts Nov. 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.”

Season 1, Episode 1: The Sun with Nicky Fox

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.

Season 1, Episode 2: Mercury with Faith Vilas

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.

Season 1, Episode 3: Venus with David Grinspoon

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.

Season 1, Episode 4: Earth with Tom Wagner

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.

Season 1, Episode 5: The Moon with Sarah Noble

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.

Season 1, Episode 6: Mars with Bruce Jakosky and Michael Meyer

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.

Season 1, Episode 7: Jupiter with Jared Epsley

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.

Season 1, Episode 8: Saturn with Linda Spilker

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.

Season 1, Episode 9: Uranus and Neptune with Amy Simon

Jason Wright, professor of astronomy and astrophysics at Penn State, has been thinking about the different technosignatures we could pick up using the telescopes we already have, and the telescopes that we could develop in the future.

Season 4, Episode 12: The Search for Technosignatures

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