[astro-ph.EP] Motivated by recent observations suggesting rings found in debris disks are wider than those in protoplanetary disks, we consider a picture in which planetesimals formed in radially narrow dust […]
Rings
Posted inNeptune
Neptune’s Inner Moons and Rings Are Exposed Icy Body Interiors
[astro-ph.EP] Neptune’s single large moon, Triton, is accompanied by a set of dusty rings and small moons whose composition and origin are uncertain.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Hyperion, Impact events, Press Release, Saturn, Titan
Saturn’s Moon Titan Could Have Formed in a Merger of Two Old Moons
Recent research suggests that Saturn’s bright rings and its largest moon, Titan, may have both originated in collisions among its moons.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
On The Applicability of Ring-Moon Cycles to Exoplanets
The presence of rings and moons around exoplanets is likely to be one of the next great discoveries in exoplanet research.
Posted inAstrochemistry, Astrogeology, Enceladus, Icy Worlds, Imaging & Spectroscopy, Radiation, Saturn, Status Report
Water-group Ion Irradiation Studies Of Enceladus Ice Analogues: Can Radiolysis Account For Material In And Around The South Polar Plume?
Saturn’s magnetosphere contains trapped plasma and energetic charged particles which constantly irradiate the surface of Enceladus.
Posted inAstrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Fomalhaut, Imaging & Spectroscopy, Press Release
Fomalhaut’s Warped Ring Is Shaped By Evolving Planets
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have made the highest resolution image to date, revealing new insights into the unusual and mysterious architecture of the debris disk encircling […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Search For Exoplanetary Ring Systems With TESS
Photometric surveys for exoplanetary ring systems have not confirmed any object with Saturn-sized ring.
Posted inAstrochemistry, Astrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Comets and Asteroids, Enceladus, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Saturn, Status Report
Peculiar Rainbows in Saturn’s E Ring: Uncovering Luminious Bands Near Enceladus
We report observations of stripe-like features in Enceladus’ plumes captured simultaneously by Cassini’s VIMS-IR and ISS NAC instruments during flyby E17, with similar patterns seen in VIMS-IR data from flyby […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Press Release, Triton
Triton Atmospheric Pressure: A New Value Is Obtained
The observation of a stellar occultation by a Solar System object is a very powerful method for measuring its dimensions, as well as possibly detecting rings, revealing an atmosphere and […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Validating the Orbital Periods of the Coolest TESS Exoplanet Candidates
When an exoplanet passes in front of its host star, the resulting eclipse causes an observable decrease in stellar flux, and when multiple such transits are detected, the orbital period […]