Tag

Centaur

All articles tagged with #centaur

space24 days ago•110 min saved

Webb spots evolving rings around Chariklo, a tiny ringed centaur

James Webb Space Telescope observations show Chariklo's two rings changed opacity since earlier views: the inner ring is denser while the outer ring is more transparent. Scientists propose three explanations—higher-resolution viewing revealing ring substructure, changes in ring material or grain properties, or wavelength-dependent scattering—and note that a follow-up stellar occultation could help confirm the findings and improve understanding of ring dynamics around distant small bodies.

via Live Science|

#centaur #chariklo #james-webb-space-telescope

technology6 months ago•10 min saved

New AI Study Suggests 'Human-Like' Cognition May Be Just Pattern Matching

A new evaluation of the Centaur AI—a system once touted to simulate human cognition across 160 tasks—suggests its performance may come from memorized training patterns rather than genuine understanding. When researchers simplified prompts to generic instructions like “Please choose option A,” Centaur still produced the dataset’s seemingly correct answers, indicating reliance on pattern recognition rather than true comprehension. The study highlights the need for rigorous, multi-faceted testing to distinguish real cognitive ability from statistical matching in AI models, underscoring ongoing challenges in defining and measuring true AI cognition.

via SciTechDaily|

#ai-evaluation #artificial-intelligence #centaur

space7 months ago•4 min saved

NASA backs Centaur upper stage to power future SLS missions

NASA has chosen the Centaur upper stage from ULA to replace the Exploration Upper Stage on the Space Launch System for Artemis 4 and 5, via a sole-source contract that includes a flight spare; this follows NASA’s decision not to pursue the Block 1B EUS and the end of ICPS production, with Centaur favored over Blue Origin’s New Glenn due to familiarity, existing infrastructure, and schedule risks.

via SpaceNews|

#artemis #centaur #nasa

technology1 year ago•6 min saved

AI Advances: Predicting and Mimicking Human Thought Processes

Scientists developed Centaur, an AI that predicts human behavior with unprecedented accuracy across various psychological experiments, outperforming traditional models and aligning more closely with human brain activity, potentially revolutionizing fields like marketing, education, and mental health, while raising ethical concerns.

via Study Finds|

#ai #centaur #cognition

science1 year ago•7 min saved

AI Mimics Human Thought to Unlock Mind's Mysteries

Scientists trained a large language model called Centaur on over 10 million responses from psychological experiments to mimic human behavior across various tasks, demonstrating its potential to serve as a tool for understanding human cognition, though it does not yet provide new theories of the mind.

via The New York Times|

#ai #centaur #human-cognition

astronomy2 years ago•5 min saved

"Mysterious Satellites: Unraveling the Secrets of Celestial Rings"

Computer simulations suggest that a small, unseen moonlet may be responsible for shaping the thin rings around the distant minor planet Chariklo, a Centaur located between Jupiter and Neptune. These rings, which are not like the rings of giant planets, are thought to be sculpted by the influence of a small satellite, keeping them narrow and preventing them from dispersing. The rings are primarily made of water ice, and their formation and stability are still under investigation.

via Space.com|

#astronomy #centaur #chariklo

archaeology2 years ago•4 min saved

"The Enigmatic Centaur Head: A Scientific Puzzle"

Despite intensive scientific analyses, the brown film on the centaur head from the Parthenon temple at the National Museum of Denmark remains a mystery. The film, first examined in 1830, contains oxalates, but its origin is unknown. Recent investigations found no traces of biological matter or paint, and the film consists of two distinct layers with different chemical compositions. The centaur head, brought to Denmark in 1688, has been indoors since before modern industrialization, making air pollution an unlikely cause. The mystery of the brown film persists, leaving researchers puzzled.

via Phys.org|

#archaeology #centaur #mystery

astronomy2 years ago•3 min saved

Transformation of Mysterious Object Trapped Between Saturn and Uranus

The Centaur object 2060 Chiron, located between Saturn and Uranus, has been found to have a transforming disk of dust around it that changes shape and can mimic rings. Observations during stellar occultations in 2011 and 2018 revealed the presence of dusty material at different distances from Chiron's center, suggesting an evolving system rather than stable rings. Another occultation in 2022 detected three symmetrical structures forming a wide disk around Chiron. The origin and composition of this material remain unknown, but it is likely to come from Chiron itself. These findings also raise questions about the nature of the structures around another Centaur, Chariklo.

via Livescience.com|

#astronomy #centaur #chiron

science-and-astronomy2 years ago•4 min saved

"Shape-shifting Centaur: Icy Object's Rings Undergo Astonishing Transformation"

The Centaur object 2060 Chiron, a captured cometary object that orbits between Jupiter and Neptune, has been found to have a transforming disk of dust around it that changes shape and can mimic rings. Observations during stellar occultations in 2011 and 2018 revealed the presence of dusty material at different distances from Chiron's center, suggesting an evolving system rather than stable rings. Another Centaur, 10199 Chariklo, was previously shown to have rings, but the findings at Chiron raise questions about the nature of the structures around Chariklo as well. The origin and composition of the material around Chiron remain unknown.

via Space.com|

#centaur #chiron #dust