On a hostile sulfur covered region, a plume of ash rises to a height of 400 kilometers or 249 miles. This is not on Earth, but rather Jupiter's moon Io. Io is the most volcanically active body in the solar system for volcanoes, with one eruption that has even been ongoing for at least 19 years. This video will discuss Io's volcanoes and why eruptions occur in the first place. Thumbnail Photo Credit: U.S. Geological Survey, Hawaiian Volcano Observatory, Public Domain, https://www.usgs.gov/media/images/ash-column-rises-overlook-crater-summit-k-lauea-vol. This image was then modified, overlaid with text, cropped, and then overlaid with GeologyHub made graphics (the GeologyHub logo and the image border). If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: null) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com/) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com/) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at tccatron@asu.edu and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image: Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 3.0 license: https://creativecommons.org/licenses/by/3.0/legalcode Creative Commons (CC BY 3.0 license) Video Source: This work "vEtnaItalyFeb2022v1", is a derivative of a photo (cropped, resized, text overlay) from ("Parossismo al Cratere di Sud-Est dell'Etna, 10 febbraio 2022: flussi piroclastici", by: Boris Behnscke, INGV-Osservatorio Etneo, 2022, INGVvulcani, INGVvulcani Channel link: null, Source video link: https://www.youtube.com/watch?v=kaqZsDuGAxM, YouTube Creative Commons, CC BY 3.0). "vEtnaItalyFeb2022v1" is used & licensed under CC BY 3.0 by null Sources/Citations: [1] NASA/JPL/USGS [2] U.S. Geological Survey [3] Hawaiian Volcano Observatory 0:00 Lava Fountains 0:27 Io Moon 1:58 Long Duration Eruption 2:37 Sulfur & Phreatic Eruptions 4:29 Conclusion