Current:Home > MyAstronomers find evidence of ocean world beneath surface of Saturn's tiny 'Death Star' moon-LoTradeCoin
Astronomers find evidence of ocean world beneath surface of Saturn's tiny 'Death Star' moon
View Date:2024-12-24 07:42:19
The appearance of one of Saturn's smallest moons lend it the nickname "Death Star," but astronomers say new evidence suggests the world is in fact home to an ingredient vital for life: water.
And lots of it.
Observations made possible by NASA's Saturn-probing Cassini spacecraft let to the discovery that a vast liquid ocean is teaming beneath the icy exterior of Mimas.
A French-led team found evidence to suggest that the ocean formed 5 to 15 million years ago on Mimas – relatively new compared to the ancient ocean moons Enceladus and Europa. The findings, published Wednesday in the journal Nature, would make the tiny moon a prime location for astronomers to study the origins of life in the solar system.
"Its heavily cratered surface gave no hint of the hidden ocean beneath," co-author Nick Cooper of Queen Mary University of London said in a statement. "This discovery adds Mimas to an exclusive club of moons with internal oceans."
Volcanic moon of Jupiter:NASA's Juno orbiter captures images of volcanic eruptions on Jupiter moon of Io
Scientists turn to Cassini spacecraft to make Mimas observations
The scientists made their findings by studying data from NASA's Cassini spacecraft, which observed Saturn and its moons for more than a decade before burning up in the planet's atmosphere in 2017.
Changes in the orbit and rotation of Mimas revealed that an ocean lurking up to 18 miles beneath the frozen crust was more likely than an elongated rocky core, the researchers discovered. Analysis of Mimas's tidal interactions with Saturn led the team to further conclude the ocean's relatively young age.
Mimas' neighboring moon, Enceladus, is famous for its water-spouting geysers that offer tangible clues to its subterranean saltwater ocean, according to NASA.
But at first glance, Mimas doesn't resemble such a world capable of harboring a vast body of liquid, making for quite an unexpected revelation.
"The major finding here is the discovery of habitability conditions on a solar system object which we would never, never expect to have liquid water," Valéry Lainey, the French astronomer who led the team of researchers from Observatoire de Paris, told Space.com. "It's really astonishing."
Further study of ocean moon could aid in search for life
One of the smallest of Saturn's 146 estimated moons, Mimas was discovered in 1789 by English astronomer William Herschel and named after a giant in Greek mythology.
Despite being just 250 miles in diameter, Mimas is home to the second-largest impact crater of any moon in the solar system. At 80 miles wide, the giant crater named after Herschel stretches a third of the way across the face of the moon, spawning its comparison to the famous Death Star space station of the fictional "Star Wars" universe.
The heavily cratered moon lacks the tell-tale signs of subterranean ocean activity such as fractures and geysers that exist on Saturn’s Enceladus and Jupiter’s Europa.
The ocean would be too young to mark the moon’s surface, but lurking beneath would be a subterranean ocean with freezing temperatures giving way to warmer waters closer to the seafloor, researchers said.
The discovery of Mimas's young ocean is proof, the study's authors claim, that even small, seemingly inactive moons can harbor hidden life-supporting conditions. The researchers hope that their findings lead to further exploration and study of the small moon.
“The existence of a recently formed liquid water ocean makes Mimas a prime candidate for study,” Cooper said, "for researchers investigating the origin of life."
Eric Lagatta covers breaking and trending news for USA TODAY. Reach him at [email protected]
veryGood! (8)
Related
- What happens to Donald Trump’s criminal conviction? Here are a few ways it could go
- Meet the NBA dancers strutting into their Golden years
- Don't have the energy to clean today? Just tidy up these 5 things
- Don't have the energy to clean today? Just tidy up these 5 things
- Full House's John Stamos Shares Message to Costar Dave Coulier Amid Cancer Battle
- Becky G Reveals How Fiancé Sebastian Lletget Challenges Her in the Best Way
- 'Shy' follows the interior monologue of a troubled teen boy
- Isla Bryson, trans woman who transitioned while awaiting trial for rapes, sentenced to prison in Scotland
- 'The Penguin' spoilers! Colin Farrell spills on that 'dark' finale episode
- 'Guardians of the Galaxy Vol. 3' sends off its heroes with a mawkish mixtape
Ranking
- Oregon's Dan Lanning, Indiana's Curt Cignetti pocket big bonuses after Week 11 wins
- Beyoncé's Renaissance tour begins; revisiting house music history with DJ Honey Dijon
- Gabrielle Dennis on working at Six Flags and giving audiences existential crises
- Mexican army confirms soldiers killed 5 civilians in border city, sparking clash between soldiers and residents
- Jana Duggar Reveals She's Adjusting to City Life Amid Move Away From Farm
- We debate the greatest TV finales of all time
- Actor Joel Edgerton avoids conflict in real life, but embraces it on-screen
- Dennis Lehane's 'Small Mercies' is a crime thriller that spotlights rampant racism
Recommendation
-
RHOBH's Erika Jayne Reveals Which Team She's on Amid Kyle Richards, Dorit Kemsley Feud
-
Yes, Dry Shampoo for Lashes Is a Thing: Here’s Why You Need It
-
In graphic memoir 'In Limbo,' a Korean American finds healing and humanity
-
Transcript: Former Secretary of State Condoleezza Rice on Face the Nation, Feb. 26, 2023
-
Todd Golden to continue as Florida basketball coach despite sexual harassment probe
-
Treasury Secretary Janet Yellen makes surprise visit to Ukraine
-
Teen Mom's Maci Bookout Reunites With Ex Ryan Edwards for Emotional Sit Down About Son Bentley
-
The unstoppable appeal of Peso Pluma and the Regional Mexican music scene