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High above the Earth’s North and South Poles, a steady stream of particles escapes from our atmosphere into space. Scientists call this mysterious outflow the “polar wind,” and for almost 60 years, spacecraft have been flying through it as scientists have theorized about its cause. The leading theory was that a planet-wide electric field was drawing those particles up into space. But this so-called ambipolar electric field, if it exists, is so weak that all attempts to measure it have failed – until now. In 2022, scientists traveled to Svalbard, a small archipelago in Norway, to launch a rocket in an attempt to measure Earth’s ambipolar electric field for the first time. This was NASA’s Endurance rocketship mission, and this is its story. To learn more, visit: Music credit: “Atoms in Motion“ by Phillip John Gregory [PRS], “Curious By Nature” by Eddie Saffron [PRS], “Perfect Vibes” by Thomas Gallicani [SACEM], “Natural Response” by Jonathan Elisa [ASCAP] and Sarah Trevino [ASCAP] from Universal Production Music Sound effects: Pixabay Credit: NASA's Goddard Space Flight Center Producer: Lacey Young (MORI Associates), Miles Hatfield (MORI Associates), Rachel Lense (ADNET Systems) Editor: Lacey Young (MORI Associates) Writer: Miles Hatfield (MORI Associates), Glyn Collinson (NASA), Rachel Lense (ADNET Systems) Talent: Glyn Collinson (NASA) Animator: Krystofer Kim (Rothe Enterprises, Inc.), Wes Buchanan (ARES Corporation) This video can be freely shared and downloaded at While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: For more information on NASA’s media guidelines, visit If you liked this video, subscribe to the NASA Goddard YouTube channel: Follow NASA’s Goddard Space Flight Center · Instagram: · X: · Facebook: · Flickr:
