--- title: What’s That Thing on Saturn’s Biggest Moon? description: Something strange is happening on the cloud-shrouded world known as Titan—and a NASA orbiter is trying to figure it out canonical: https://time.com/3446558/titan-saturn-formation/ author: Michael Lemonick article:opinion: false article:content_tier: free article:published_time: 2014-09-30T14:22:01.000Z article:modified_time: 2026-05-11T05:07:37.737Z article:section: Science og:title: What's the Mystery Object on Saturn's Largest Moon? og:description: Something strange is happening on the cloud-shrouded world known as Titan—and a NASA orbiter is trying to figure it out og:url: https://time.com/3446558/titan-saturn-formation/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltafbffb71d3a87dec/6986a626d0b6f210c7306653/pia18430_modest.jpg?branch=production&width=2400&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 og:image:alt: What in the world? The mystery formation as seen over time og:type: article twitter:card: summary_large_image twitter:title: What's the Mystery Object on Saturn's Largest Moon? twitter:description: Something strange is happening on the cloud-shrouded world known as Titan—and a NASA orbiter is trying to figure it out twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltafbffb71d3a87dec/6986a626d0b6f210c7306653/pia18430_modest.jpg?branch=production&width=2400&quality=75&auto=webp&crop=16:9 ---  # What's That Thing on Saturn's Biggest Moon? by [Michael Lemonick](https://time.com/author/michael-d-lemonick/) ## Michael Lemonick Sep 30, 2014 2:22 PM UTC  What in the world? The mystery formation as seen over time What in the world? The mystery formation as seen over timeJPL/NASA by [Michael Lemonick](https://time.com/author/michael-d-lemonick/) ## Michael Lemonick Sep 30, 2014 2:22 PM UTC It’s not the first time a formation has appeared, seemingly out of nowhere, on a world beyond Earth. Usually, it’s Mars: this year alone the Mars Reconnaissance Observer spotted a [brand-new crater](http://time.com/109562/nasa-photos-new-crater-mars/) that wasn’t there last time NASA looked, while the Opportunity Rover discovered the amazing [Ghost Rock](http://time.com/1417/martian-ghost-rock-baffles-nasa/) that also didn’t exist—and then it did. Now it’s Titan’s turn. Saturn and its moons have been under close scrutiny by the [Cassini](http://content.time.com/time/interactive/0,31813,2015807,00.html) probe ever since the spacecraft arrived in the neighborhood back in 2004, discovering such oddities as [geysers ](http://time.com/3054748/nasa-discovers-101-active-geysers-on-saturns-moon/)and a [subsurface ocean](http://content.time.com/time/health/article/0,8599,2109837,00.html) on the ice moon Enceladus; a mysterious [hexagon-shaped storm](http://science.time.com/2013/04/30/saturn/) on Saturn itself; and a hydrocarbon cycle on Titan that mirrors Earth’s water cycle, complete with [rainstorms](http://www.planetary.org/blogs/emily-lakdawalla/2011/2970.html), [rivers](http://content.time.com/time/magazine/article/0,9171,1018100,00.html) and [lakes](http://content.time.com/time/health/article/0,8599,2117299,00.html). But in July, 2012, Cassini spotted something that hadn’t been there anytime in the previous seven years: a bright spot, covering about 30 square miles (78 sq. km), in the lake known as Ligeia Mare, which is bigger than Lake Superior. NASA called it a “transient feature,” while the Internet dubbed it the “[Magic Island](http://time.com/2911858/magic-island-titan-saturn/).” And as of August 21 of this year, the space agency has just announced, it was still visible—and in fact, it had doubled in size. “The fact that it’s still there shows that it isn’t just some artifact of the imaging system,” says Jason Hofgartner, the Cornell grad student who’s in charge of figuring out what the darned thing is. “Something is really happening on Titan.” Hofgartner and his colleagues have narrowed the “something” down to four possibilities. “It could be waves,” he says. “It could be bubbles rising up from the bottom. It could be solids of some kind floating on the surface—or solids suspended below the surface. All of these,” he says, “are equally viable at this point.” The scientists are convinced, however, that the mystery island almost certainly has to do with the changing of seasons on Titan. Riding along in its orbit around Saturn, Titan takes 30 years to circle the Sun, and the northern hemisphere, where Ligeia Mare is located, is just at the start of its 7 1/2-year summer. It’s bathed in solar energy, and, says Hofgartner, “any of those \[features\] could be powered by the seasonal change.” ### PHOTOS: This Astronaut's Images of Earth Look Like Beautiful Abstract Paintings  "Harsh land. Windswept valleys in northern #Africa"—Alexander Gerst via Twitter on July 6, 2014 Alexander Gerst—ESA  "Land use in South Africa, you can see where water is."—Alexander Gerst via Twitter on July 9, 2014. Alexander Gerst—ESA  "Irrigation in the #Sahara #Desert looks like a challenging task from up here... #BlueDot"—Alexander Gerst via Twitter on July 28, 2014 Alexander Gerst—ESA  "An open history book of our planet: the #Sahara Desert"—Alexander Gerst via Twitter on July 26, 2014 Alexander Gerst—ESA  "An open history book of our planet: the # Sahara Desert"—Alexander Gerst via Twitter on July 26, 2014 Alexander Gerst—ESA/SIPA USA  "Close-up of gigantic Salar of Uyuni in Bolivia. You can even see the salt fields and the 'Cactus Island'."—Alexander Gerst via Twitter on July 15, 2014. Alexander Gerst—ESA  "The #Moon was still behind the horizon. A #FataMorgana of atmospherical refraction #BlueDot"—Alexander Gerst via Twitter on July 14, 2014 Alexander Gerst—ESA/SIPA USA  "When I took this photo, I was sure these are clouds. But now I'm not so sure... #BlueDot"—Alexander Gerst via Twitter on July 7, 2014 Alexander Gerst—ESA  "Probably a river in Kazakhstan or slightly west of it."—Alexander Gerst via Twitter on July 29, 2014 Alexander Gerst—ESA/SIPA USA  "An open history book of our planet: the #Sahara Desert"—Alexander Gerst via Twitter on July 26, 2014 Alexander Gerst—ESA  "Human-made fires in East Africa. Can you spot them?"—Alexander Gerst via Twitter on July 9, 2014 Alexander Gerst—ESA If so, it wouldn’t be the first time scientists have seen seasonal effects on Titan: when Cassini first arrived in the Saturnian system, the moon’s southern hemisphere was edging into the end of summer, and observations suggested at the time that evaporation had shrunk the lakes in the region from their maximum extent—the same thing that happens to lakes and reservoirs on Earth. In fact, the search for evidence of seasonal changes on Titan was a primary objective of the Cassini mission, and the space probe should get at least another look at the mystery island before the mission ends. That won’t remotely solve all of the mysteries about this extraordinary moon, however. It’s nothing less than a Bizarro version of Earth, with methane and other hydrocarbons taking the place of water. “It has all kinds of processes we can learn about,” says Hofgartner, “which could help us understand processes on Earth better.” That could call for a return visit one day by a successor of Cassini. “There are lots of reasons,” Hofgartner says, “to go back.” ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3446558/titan-saturn-formation/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3446558/titan-saturn-formation/"},"headline":"What's That Thing on Saturn's Biggest Moon?","datePublished":"2014-09-30T14:22:01.000Z","dateModified":"2026-05-11T05:07:37.737Z","description":"Something strange is happening on the cloud-shrouded world known as Titan—and a NASA orbiter is trying to figure it out","url":"https://time.com/3446558/titan-saturn-formation/","keywords":["Space","NASA","earth","cassini","saturn","methane"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltafbffb71d3a87dec/6986a626d0b6f210c7306653/pia18430_modest.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Michael Lemonick","jobTitle":null,"url":"https://time.com/author/michael-d-lemonick/"}],"articleSection":"Science","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltafbffb71d3a87dec/6986a626d0b6f210c7306653/pia18430_modest.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"What in the world? The mystery formation as seen over time","caption":"What in the world? The mystery formation as seen over time","creditText":"JPL/NASA","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/science/","name":"Science"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/space/","name":"Space"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3446558/titan-saturn-formation/","name":"What's That Thing on Saturn's Biggest Moon?"}}]}] ```