Search results for “Cassini”

SETI Institute to honor Dr. Matthew Tiscareno with 2026 Carl Sagan Center Director’s Award

HKU astrophysicists find Saturn’s magnetic bubble differ from earth-based models appearing to be less symmetrical and off-center

Researchers found auroras on Saturn behave differently from those on Earth, appearing uneven and shifted to one side. The team attributes this to Saturn's rapid rotation, which reshapes its magnetic environment, driving an off-center magnetic bubble pattern.

Spacecraft data reveals surprising detail about Saturn's magnetic "shield"

Researchers have confirmed that giant planets like Saturn operate under a unique magnetospheric regime, with a shifted cusp location due to its rapid rotation. This discovery alters models of magnetic reconnection and high-energy particle acceleration, revealing new insights into Saturn's auroral activity.

Saturn’s magnetic bubble is lopsided compared to Earth’s

A new study suggests Saturn's magnetic field is asymmetrical, with cusps located most often between 13:00 and 15:00. The researchers believe rapid spin and heavy plasma from Enceladus drag the field lines to the right.

Scientists solve decades-long mystery about why Saturn appears to change its spin

Researchers at Northumbria University used the James Webb Space Telescope to map Saturn's auroral region, revealing a complex pattern of heating and cooling. The findings show that Saturn's aurora is not just a visual display but actively heats its atmosphere, driving winds that generate electrical currents.

Saturn's moon Titan could have formed in a merger of two old moons

A new study suggests that Saturn's largest moon, Titan, formed from a merger of two earlier moons, and this event may also be linked to the formation of Saturn's rings. The research proposes that Titan is the product of a collision between an extra moon and itself, resulting in the creation of fragments near Titan's orbit.

Saturn’s biggest moon might not have an ocean after all

Researchers reanalyze Cassini mission data to find that Titan's interior is more icy and slushy than previously thought, with implications for the search for life on Titan. The new findings suggest a slushy layer instead of an ocean, which could facilitate the growth of simple organisms.

Saturn’s icy moon may host a stable ocean fit for life, study finds

A new study confirms that Saturn's icy moon Enceladus has significant heat flow at its north pole, overturning previous assumptions and strengthening the case that it could support life. The sub-surface ocean is believed to be one of the best places in our solar system for life to have evolved outside Earth.

Researchers discover latitude- and regolith-dependent distribution of lunar surface water

A research team from the Chinese Academy of Sciences found that lunar surface water has a global source in the solar wind, with its distribution mainly controlled by latitude and regolith maturity. The study used samples from China's Chang'e-6 mission and NASA's Apollo missions to analyze the abundance and origin of lunar surface water.

Cassini proves complex chemistry in Enceladus ocean

Scientists have found new complex organic molecules spewing from Saturn's moon Enceladus, confirming that complex chemical reactions are taking place within its underground ocean. The discovery strengthens the case for a dedicated European Space Agency (ESA) mission to orbit and land on Enceladus.

Out-of-this-world ice geysers

New supercomputer simulations from the Texas Advanced Computing Center have found improved estimates of ice mass Enceladus is losing to space. The findings help with understanding and future robotic exploration of what's below the surface of the icy moon, which might harbor life.

SwRI’s Glein selected to give AGU Carl Sagan Lecture

Dr. Glein will discuss Enceladus' deep ocean beneath its icy surface, which contains organic molecules and nutrients needed for life. The Saturn moon's ocean erupts into space, forming a towering plume with constant activity, making it a promising place for life.

Study questions ocean origin of organics in Enceladus’s plumes

New research questions the origin of organic molecules in Enceladus's plumes, suggesting they could be formed by radiation on Saturn's surface rather than originating from the sub-surface ocean. This challenges astrobiologists' assumptions about the moon's habitability.

Moon’s mysterious wobbling atmosphere like gyroscope, new research suggests

Researchers at the University of Bristol have discovered that Saturn's moon Titan has an atmosphere that tilts and shifts over time, behaving like a gyroscope. The team analyzed data from the Cassini-Huygens mission to understand how Titan's atmosphere wobbles with the seasons.

Scientists probe the mystery of Titan’s missing deltas

Researchers found that only about 1.3% of Titan's large rivers have deltas, unlike Earth where nearly every similar-sized river has one. The absence of deltas may be due to rapid sea level changes or strong winds and tidal currents on Titan's coasts.

Magnetic tornado is stirring up the haze at Jupiter's poles

Researchers have discovered unusual, Earth-size magnetically driven vortices generating dense, hydrocarbon haze at Jupiter's poles. The dark ovals hint at strong interactions between the planet's magnetic field and atmosphere.

New analysis of Cassini data yields insights into Titan’s seas

Researchers analyzed Cassini radar experiment data to estimate the composition and roughness of Titan's sea surfaces, revealing differences in hydrocarbon seas' surface layers dependent on latitude and location. The study found higher dielectric constants in southern Kraken Mare and detected tidal currents near coastal areas.

Titan’s lakes may be shaped by waves

Researchers used simulations to model the erosion of Titan's shorelines, finding that waves are the most likely explanation for the moon's lakes and seas. The team found that wave activity could have shaped the coastlines of lakes and seas on Titan.

Jupiter's great red spot is not the same one Cassini observed in 1600s

The Great Red Spot on Jupiter has persisted for at least 190 years, with its formation likely occurring after the 17th-century astronomer Giovanni Domenico Cassini's observation. The spot's longevity is due to an instability in Jupiter's intense atmospheric winds, producing a long-lasting atmospheric cell.

Establishing age and origin of Jupiter's Great Red Spot

Jupiter's Great Red Spot is a massive anticyclonic vortex with winds traveling at 450 km/h. The study reveals that the current GRS likely originated from a proto-GRS formed due to wind instability, which then underwent shrinkage over time.

Signs of life detectable in single ice grain emitted from extraterrestrial moons

Researchers find that instruments on future missions can detect cellular material in one out of hundreds of thousands of ice grains, including a common bacterium as a model organism. This breakthrough increases confidence in detecting lifeforms similar to those on Earth.

Mimas' surprise: Tiny moon holds young ocean beneath icy shell

A global ocean of liquid water has been found beneath Mimas' icy shell, with an estimated age of 5-15 million years, suggesting recent ocean formation and potential for life to emerge. This discovery adds Mimas to the list of moons with internal oceans, including Enceladus and Europa.

Titan’s “magic islands” likely honeycombed hydrocarbon icebergs

Researchers have found that Titan's 'magic islands' are likely formed by floating chunks of porous, frozen organic solids, explaining their ephemeral nature. The discovery sheds light on the fate of simple organics on Titan's surface and provides insights into the moon's unique environment.

Can signs of life be detected from Saturn’s frigid moon?

A recent study by researchers from the University of California San Diego has provided evidence that amino acids, the building blocks of life, can survive impact speeds of up to 4.2 km/s in Saturn's icy moon Enceladus' ice plumes. This finding has significant implications for the search for life beyond Earth.

Using eclipses to calculate the transparency of Saturn’s rings

A Lancaster University PhD student used a new method to calculate the optical depth of Saturn's rings, revealing their transparency. By analyzing changes in Cassini's Langmuir Probe data during solar eclipses, the researcher determined how much sunlight passed through each ring.

Studies of geologic faulting on icy moons aid exploration of extraterrestrial watery worlds

Researchers investigate geologic features on icy moons, revealing mechanisms behind strike-slip faults. Studies on Titan and Ganymede provide insights into potential environments conducive for life emergence.

NASA's Webb discovers new feature in Jupiter’s atmosphere

The discovery reveals insights into how the layers of Jupiter's atmosphere interact with each other and how the planet's fast rotation affects the wind patterns. The research team analyzed data from Webb's NIRCam to track the jet stream, which is located around 25 miles above the clouds in Jupiter's lower stratosphere.

New simulations shed light on origins of Saturn’s rings and icy moons

Researchers used supercomputer simulations to model possible collisions between precursor icy moons and discovered that an impact could scatter the right amount of ice into Saturn's Roche limit, forming its iconic rings. The study suggests a massive collision occurred around 200 million years ago, creating the remarkably young and almo...

New Saturn images show a change of seasons – and a last glimpse of its huge, warm polar vortex

Saturn's north pole is experiencing a cooling trend as autumn approaches, with the warm polar vortex filled with hydrocarbon gases disappearing. The new observations provide insights into the changing seasons on the massive outer planet, using data from the James Webb Space Telescope.

Phosphate, a key building block of life, found on Saturn’s moon Enceladus

Researchers have found high levels of phosphates in the water on Saturn's moon Enceladus, a key component of DNA and cell membranes. The discovery increases the chances of finding habitable worlds across the galaxy, as Enceladus can support life over a wider range of distances from its star.

Webb maps surprisingly large plume jetting from Saturn’s moon Enceladus

Astronomers have detected a surprisingly large water vapor plume spanning over 6,000 miles from Saturn's moon Enceladus using the James Webb Space Telescope. The plume extends far beyond its release region at the southern pole and feeds the torus of Saturn's outermost ring, with 30% of the water staying within it.

Webb Telescope finds towering plume of water escaping from Saturn moon

The James Webb Space Telescope has discovered a massive plume of water vapor on Saturn's moon Enceladus, stretching over 6,000 miles. This finding has significant implications for the search for life beyond Earth, as it suggests that Enceladus may have the necessary ingredients for habitability.

New study puts a definitive age on Saturn’s rings—they’re really young

Saturn's rings are estimated to be 400 million years old, much younger than the planet itself, according to a new study. The researchers used dust analysis to determine the age of the rings, which are composed of ice and rocky material.

Hubble finds Saturn's rings heating its atmosphere

Astronomers have found that Saturn's vast ring system is heating the giant planet's upper atmosphere, a phenomenon that could provide insights into the atmospheres of distant worlds. The discovery was made using archival ultraviolet-light observations from four space missions, including Hubble and Cassini.

UCLA-led study explains how one of Saturn’s moons ejects particles from oceans beneath its surface

A new UCLA-led study explains that tidal heating in Enceladus' rocky core creates currents that transport silica particles to the surface. The research suggests that these flows can pick up materials from the seafloor and bring them to the ice shell, providing evidence for hydrothermal activity at the ocean floor.

SwRI investigations reveal more evidence that Mimas is a stealth ocean world

Numerical simulations suggest that Mimas' Herschel impact basin is compatible with a thinning ice shell and geologically young ocean. The results imply that the present-day ocean within Mimas must have been warming and expanding since its formation, potentially making it an emerging ocean world.

What it would take to discover life on Saturn's icy moon Enceladus

A new study suggests that an orbiting space probe could provide definitive answers about the presence of life on Enceladus' ocean. The team mapped out how a hypothetical mission could gather data from the moon's plumes, which are thought to contain organic molecules and methane.

SwRI scientists compile Cassini’s unique observations of Saturn’s rings

Researchers compiled 41 solar occultation observations of Saturn's rings from the Cassini mission to inform future investigations into their formation and evolution. The study reveals new information on ring particles' sizes and compositions, shedding light on the origins of the ring system.

Scientists depict Dragonfly landing site on Saturn moon Titan

Cornell researchers have helped NASA's Dragonfly mission prepare for a smooth landing on Saturn's moon Titan by analyzing radar images of the Selk crater region. The team characterized the landscape, gauging the rim height of the crater and understanding its geology.

SwRI scientist helps identify new evidence for habitability in Enceladus’s ocean

Scientists have discovered new evidence of phosphorus availability in Enceladus's ocean, making it a prime target in the search for extraterrestrial life. The discovery suggests that Enceladus's subsurface ocean is likely habitable due to its high levels of dissolved phosphorus.

Destruction of a former moon of Saturn may explain the planet’s tilt and young rings

Researchers propose that a violent event 150 million years ago destroyed a moon called Chrysalis, causing Saturn's iconic rings to form recently. This event could also explain Titan's eccentricity and Saturn's obliquity, providing a possible solution to long-standing puzzles in planetary formation.

SwRI researcher shows how elliptical craters could shed light on age of Saturn’s moons

A SwRI study examines elliptical craters on Saturn's moons Tethys and Dione, finding unique patterns that indicate the satellites' age and formation conditions. The research suggests a planetocentric impactor population, pointing to the importance of considering gravity-driven impacts when studying object ages.

Saturn’s high-altitude winds generate an extraordinary aurorae, study finds

Researchers at the University of Leicester have discovered a new mechanism driving Saturn's massive aurorae, which are fueled by swirling winds in its upper atmosphere. This discovery answers one of NASA's Cassini mission mysteries and highlights the complex interactions between atmospheric weather and aurora creation.

Saturn's high-altitude winds generate extraordinary aurorae, study finds

Researchers have found that Saturn's unique aurorae are generated by swirling winds within its atmosphere, not just from the surrounding magnetosphere. The study uses infrared emission data and ionospheric mapping to identify the fundamental driver behind the observed periodicities.

SwRI scientist uncovers evidence for an internal ocean in small Saturn moon

A Southwest Research Institute scientist found compelling evidence for a liquid internal ocean on Mimas, a small Saturn moon. The discovery expands the definition of habitable worlds and suggests that worlds like Earth with surface oceans may not be unique in the galaxy.

Titan’s river maps may advise Dragonfly’s sedimental journey

A Cornell-led team has published detailed maps of Titan's liquid methane rivers and tributaries, providing context for the upcoming Dragonfly mission. The research examined Earth-based radar data to understand fluvial characteristics on Titan, shedding light on its sediment transport system.

New mathematical solutions to an old problem in astronomy

Theoretical astrophysicist Kevin Heng has discovered an entire family of new mathematical solutions for calculating phase curves, enabling the analysis of data in seconds. These solutions have major implications for interpreting data, such as analyzing the Cassini spacecraft's Jupiter phase curves to infer a cloudy atmosphere.

Titan-in-a-glass experiments hint at mineral makeup of Saturn moon

Scientists recreated Titan's conditions, studying properties of organic molecules ACN and PCN on the moon's surface. The findings could provide insights into Titan's surface cracking and confirm its mineral composition.

Dragonfly mission to Titan announces big science goals

The Dragonfly mission will investigate Titan's surface and atmosphere, searching for chemical biosignatures and exploring the moon's active methane cycle. By analyzing the prebiotic chemistry currently taking place in Titan's atmosphere and on its surface, scientists hope to gain insights into the potential for life on the moon.

Methane in the plumes of Saturn's moon Enceladus: Possible signs of life?

A study suggests that known geochemical processes cannot explain the high concentration of methane detected by Cassini spacecraft on Enceladus. Mathematical models suggest that microbial hydrothermal vent activity or abiotic processes could be responsible for the methane production.

Johns Hopkins scientists model Saturn's interior

Researchers simulate conditions necessary for Saturn's unique magnetic field, indicating higher temperatures at the equatorial region and lower temperatures at high latitudes. The findings advance the effort to map Saturn's hidden regions and provide insights into the planet's formation and evolution.

Ocean currents predicted on enceladus

Scientists predict ocean currents on Enceladus, driven by salinity variations like those in Earth's Southern Ocean. The research suggests a pole-to-equator circulation influencing heat and nutrient distribution.

Astronomers estimate Titan's largest sea is 1,000-feet deep

Cornell University researchers estimated the depth of Kraken Mare on Saturn's moon Titan to be at least 1,000 feet, using data from the Cassini mission. The sea is also massive, covering an area nearly as large as all five Great Lakes combined.

Astigmatism measures and corneal power obtained with different devices

Researchers found significant differences in astigmatism measures obtained by Pentacam, Cassini, and IOL-master systems, affecting cataract surgery outcomes. The study's findings highlight the need for further investigation into refractive predictability studies to determine the best optometric device.

SwRI models point to a potentially diverse metabolic menu at Enceladus

Scientists at Southwest Research Institute modeled chemical processes in Enceladus' subsurface ocean, indicating the possibility of a diverse microbial community. The study found that oxidant production and oxidation chemistry could contribute to supporting possible life on Enceladus.

Review examines sexual aggression in mammals

A recent review of published studies found that male behavior causing harm to females during mating is a common issue in several mammalian orders. The most common response from females was grouping around a dominant male, suggesting that sexual aggression may not be as widespread as previously thought.

Interplanetary storm chasing

Researchers Jeremy Bloxham and Rakesh K. Yadav use a 3D simulation model to understand the formation of Saturn's massive hexagon storm, which has remained relatively unchanged for nearly 40 years. The study suggests that deep thermal convection plays a key role in creating the unique shape and persistence of the storm.

Going nuclear on the moon and Mars

Nuclear fission reactors are being considered as top candidates to generate electricity in space due to their reliability and capacity. The technology has been tested and could provide a power source for several years, making it an attractive option for lunar and Martian settlements.

Discovered a multilayer haze system on Saturn's Hexagon

The Cassini spacecraft captured high-resolution images of Saturn's Hexagon, revealing a multilayered haze system with particles as small as 1 micron. The team discovered that the hazes are organized by gravity waves and may be responsible for the hexagon's formation.

What makes Saturn's atmosphere so hot

New analysis of data from NASA's Cassini spacecraft reveals that auroral electric currents are likely responsible for heating Saturn's upper atmosphere. The study provides the most complete mapping yet of temperature and density in a gas giant's upper atmosphere, shedding light on how heat circulates in the region.