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Ceres

All articles tagged with #ceres

Ceres’s salty cryovolcano: Ahuna Mons rises from a frozen brine
space20 days ago

Ceres’s salty cryovolcano: Ahuna Mons rises from a frozen brine

NASA’s Dawn data mark Ahuna Mons on the dwarf planet Ceres as a four-kilometer-tall cryovolcanic dome built from a viscous brine–ice–salt slurry that surfaced and froze, with gravity evidence pointing to a buried source. Its youthful, steep profile and bright mineral streaks suggest recent internal activity within tens to hundreds of millions of years, making it a standout, possibly episodic example of icy volcanism on Ceres.

Earth’s hidden balance: a persistent east–west albedo symmetry revealed
science4 months ago

Earth’s hidden balance: a persistent east–west albedo symmetry revealed

A 25-year CERES record reveals a unique and persistent east–west albedo symmetry around 27°E, where Eastern and Western Hemispheres reflect nearly identical solar radiation. The symmetry forms a triple balance: high-cloud reflection is stronger in the Eastern Hemisphere, low-cloud reflection dominates in the Western Hemisphere, and ice-free ocean fractions are nearly the same in both hemispheres, collectively maintaining similar reflectivity. Interannual variability of the symmetry tracks ENSO, implying a link to Walker circulation, while climate models (CMIP6) fail to reproduce this feature, highlighting gaps in cloud representation. The finding offers a new constraint for Earth system models and underscores the need for sustained radiation-budget observations amid climate change.

Ceres Reveals Hidden Brines and Cryovolcanic Activity Beneath Occator Crater
space4 months ago

Ceres Reveals Hidden Brines and Cryovolcanic Activity Beneath Occator Crater

NASA’s Dawn data show Ceres has a complex surface with a gravity anomaly indicating subsurface brines beneath Occator crater, where bright deposits like Cerealia Facula and Vinalia Facula suggest recent cryovolcanic activity. The findings point to a possible past subsurface ocean, a high water content around 25%, and ongoing surface modification from impacts, making a future orbiter/lander sample-return mission plausible to study these features in detail.

10 Surprising Discoveries by Astronomers While Pursuing Other Goals
science1 year ago

10 Surprising Discoveries by Astronomers While Pursuing Other Goals

Astronomers have made several unexpected discoveries while searching for other celestial phenomena, including the discovery of Uranus, Ceres, solar flares, cosmic X-rays, the cosmic microwave background, pulsars, gamma-ray bursts, exoplanets, dark energy, and fast radio bursts, all of which have significantly advanced our understanding of the universe.

science1 year ago

Ceres: A Clue to Life's Origins on a Dwarf Planet

A new study suggests that collisions in space can produce and preserve carbon on dwarf planets like Ceres, which may hold clues to the origins of life. The research highlights the importance of future sample return missions to analyze organic materials on Ceres, especially in light of its potential subsurface ocean and the challenges posed by shock metamorphism during impacts. Funding and mission planning are critical for advancing this research.

Ceres: A Potential Ocean World Teeming with Life-Supporting Organics
science1 year ago

Ceres: A Potential Ocean World Teeming with Life-Supporting Organics

Recent research on the dwarf planet Ceres, based on data from NASA's Dawn mission, has identified 11 new regions rich in organic materials, suggesting the presence of an internal reservoir. This discovery raises the possibility that Ceres could support biological processes, as these materials may have formed within the planet itself. The findings enhance Ceres' significance in planetary science and space exploration, highlighting its potential as a target for future missions and its role in understanding the solar system's history and the potential for life beyond Earth.