Tag

Subsurface Ocean

All articles tagged with #subsurface ocean

space3 days ago•13 min saved

Galileo’s Swan Song: NASA Sacrificed a Probe to Shield Europa’s Hidden Ocean

In 2003 NASA deliberately crashed the Galileo spacecraft into Jupiter to prevent a potential contaminant from a drifting probe reaching Europa, after data suggested a subsurface salty ocean on Europa (and discoveries about other Jovian moons). The decision reflected planetary-protection rules: if a world could harbor life, a failing or abandoned spacecraft must not risk introducing Earth biology. Galileo’s extended mission delivered key findings about Europa, Ganymede, and Callisto, and its disposal set a precedent for how future outer-planet missions are planned to avoid contaminating ocean worlds like Europa.

via Space Daily|

#europa #galileo #nasa

space3 days ago•10 min saved

Enceladus: sampling an alien ocean without landing via its plume

Enceladus, a small moon of Saturn, hides a global ocean beneath its ice and vents a plume of water vapor and ice grains through south-pole fractures, feeding Saturn’s E ring. Cassini flew through this plume from 2004–2017, sampling material from the ocean that had been altered en route and finding organic compounds and phosphorus, which points to habitability rather than life—no life-detection instruments were onboard. Future missions with dedicated biosignature instruments could probe further, but none are funded yet; current insights come from re-analysis of Cassini data and the plume’s status as a processed sample of an alien ocean.

via Space Daily|

#astrobiology #enceladus #plume

space3 months ago•14 min saved

Miranda's Hidden Ocean Reframes the Search for Life on Uranus' Moon

A Planetary Science Journal study reexamining Voyager 2 data suggests Miranda, a moon of Uranus, could have hosted a deep subsurface ocean (potentially ≥100 km) in the last 100–500 million years, with tidal heating possibly keeping liquid water inside. While conclusive evidence of life isn’t found, this makes Miranda a notable candidate in the broader search for extraterrestrial life and informs the Drake Equation’s life-fraction term.

via Hackaday|

#extraterrestrial-life #miranda #planetary-science

space4 months ago•74 min saved

Drifting surface ice could ferry life-supporting chemicals to Europa’s hidden ocean

Washington State University researchers model lithospheric foundering on Jupiter’s moon Europa, showing that salt-rich surface ice can sink through the ice shell and transport oxidants formed by Jupiter’s radiation into the subsurface ocean in as little as 30,000 years, potentially delivering the ingredients needed for life and informing upcoming Europa Clipper investigations.

via Space|

#astrobiology #europa #ice

science5 months ago•5 min saved

Recent Studies Question the Existence of a Subsurface Ocean on Titan

A new study suggests Saturn's moon Titan may not have a buried ocean but instead contains widespread pockets of liquid water within a layer of ice, challenging previous assumptions about its internal structure and habitability potential.

via Space|

#liquid-water #moon #saturn

science5 months ago•5 min saved

New Study Challenges the Existence of a Subsurface Ocean on Titan

A new analysis of data from NASA's Cassini spacecraft suggests that Saturn's moon Titan does not have a subsurface ocean of liquid water, as previously thought, but instead has a thick ice crust with a layer of slush and meltwater pockets, which could significantly alter the search for life on Titan.

via Gizmodo|

#cassini #habitability #ice-crust

science5 months ago•2 min saved

Scientists Investigate Spider-Like Feature on Europa Indicating Possible Subsurface Water

Scientists have identified a large, spider-shaped surface feature on Jupiter's moon Europa, called Damhán Alla, which may indicate water erupting through the ice shell and suggest the presence of a subsurface ocean, making Europa a promising candidate for extraterrestrial life. The feature resembles Earth's lake stars and was first observed by NASA's Galileo mission, with further studies potentially revealing more about Europa's hidden water reservoirs.

via Futurism|

#damhan-alla #europa #science

science5 months ago•2 min saved

Scientists Investigate Mysterious Spider-Like Formation on Europa

Scientists have identified a spider-shaped surface feature on Europa, Jupiter's icy moon, which may indicate water erupting through its ice shell and suggest the presence of a subsurface ocean, making Europa a promising candidate for extraterrestrial life.

via Yahoo|

#damhan-alla #europa #science

science8 months ago•2 min saved

NASA Uncovers Surprising Oxygen Shortage on Europa, Challenging Life Possibility

Europa, one of Jupiter's icy moons, has a vast subsurface ocean that could support microbial life due to its water, chemical ingredients, and energy sources, but extreme cold and radiation pose significant challenges for human survival. NASA's Europa Clipper mission aims to explore these conditions in detail by 2030.

via WION|

#europa #jupiters-moon #nasa-europa-clipper

science9 months ago•4 min saved

NASA Finds Evidence Ceres Could Have Supported Microbial Life

NASA's study suggests that Ceres may have once had conditions suitable for microbial life, with a subsurface ocean enriched with chemicals and energy sources, similar to Earth's hydrothermal vents, although it is no longer habitable today.

via The Daily Galaxy|

#ceres #dwarf-planet #habitability

science9 months ago•4 min saved

Ceres' Potential for Habitability and Past Life Conditions

New NASA research suggests that Ceres, the largest asteroid in the belt, may have had a long-lasting source of chemical energy in its past, potentially supporting microbial life, due to a steady supply of hot, mineral-rich water from its interior, although current conditions are too cold for habitability.

via Phys.org|

#ceres #dwarf-planet #habitability

science9 months ago•3 min saved

NASA Scientists Suggest Ceres Could Have Supported Life Due to Long-Lasting Energy Sources

NASA research suggests that Ceres, a dwarf planet in the asteroid belt, may have had a long-standing internal energy source around 2.5 billion years ago, which could have supported microbial life due to the presence of water, organic molecules, and chemical energy, although it is now too cold to be habitable.

via NASA (.gov)|

#ceres #dawn-mission #habitability

science9 months ago•9 min saved

Pluto's Hidden Ocean May Be Revealed by New Mission and Supervolcano Activity

NASA's proposed Persephone mission aims to orbit Pluto for over three years to investigate its potential subsurface ocean, surface features, and atmosphere, building on insights from the 2015 New Horizons flyby. The mission faces challenges including high costs, long duration, and technological requirements, but could significantly advance understanding of Pluto's geology and its place in the Kuiper Belt.

via Space|

#kuiper-belt #nasa #persephone-mission

science10 months ago•5 min saved

Webb Telescope Uncovers Bizarre and Unsettling Secrets Beneath Europa's Ice

Recent observations by the James Webb Space Telescope revealed unexpected hydrogen peroxide on Europa, prompting experiments that suggest the presence of chemical processes and potential habitability in Europa's subsurface ocean, aligning with upcoming NASA missions to explore the moon's potential for supporting life.

via Rude Baguette|

#europa #hydrogen-peroxide #jwst

science10 months ago•4 min saved

James Webb Uncovers Hidden Violent Forces Beneath Europa’s Ice

Recent discoveries from the James Webb Space Telescope reveal that Europa's icy surface is dynamic and geologically active, with chaos terrains indicating ongoing processes and a hidden ocean beneath the ice that may support life, prompting further exploration by NASA's Europa Clipper mission.

via Rude Baguette|

#europa #geological-activity #habitability