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A terrestrial planet candidate in a temperate orbit around Proxima Centauri
Observations reveal the presence of a small planet with a minimum mass of about 1.3 Earth masses orbiting Proxima with a period of approximately 11.2 days at a semi-major-axis distance of around 0.05 astronomical units. Expand
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun
The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails. Expand
Comet 67P/Churyumov-Gerasimenko preserved the pebbles that formed planetesimals
Solar System formation models predict that the building-blocks of planetesimals were mm- to cm-sized pebbles, aggregates of ices and non-volatile materials, consistent with the compact particlesExpand
“TNOs are Cool”: A survey of the trans-Neptunian region - IX. Thermal properties of Kuiper belt objects and Centaurs from combined Herschel and Spitzer observations
Aims. The goal of this work is to characterize the ensemble thermal properties of the Centaurs/trans-Neptunian population. Methods. Thermal flux measurements obtained with Herschel/PACS andExpand
Density and Charge of Pristine Fluffy Particles from Comet 67P/Churyumov-Gerasimenko
The Grain Impact Analyzer and Dust Accumulator (GIADA) instrument on board ESA’s Rosetta mission is constraining the origin of the dust particles detected within the coma of comet 67Expand
Possible ring material around centaur (2060) Chiron
We propose that several short duration events observed in past stellar occultations by Chiron were produced by rings material. From a reanalysis of the stellar occultation data in the literature weExpand
Evolution and persistence of 5‐μm hot spots at the Galileo probe entry latitude
We present a study on the longitudinal locations, morphology, and evolution of the 5-μm hot spots at 6.5°N latitude (planetocentric) from an extensive Infrared Telescope Facility-National ScienceExpand
Short-term variability of a sample of 29 trans-Neptunian objects and Centaurs
Aims. We attempt to increase the number of trans-Neptunian objects (TNOs) whose short-term variability has been studied and compile a high quality database with the least possible biases, which mayExpand
Evolution of the Dust Size Distribution of Comet 67P/Churyumov-Gerasimenko from 2.2. AU to Perihelion
The Rosetta probe, orbiting Jupiter-family comet 67P/Churyumov–Gerasimenko, has been detecting individual dust particles of mass larger than 10−10 kg by means of the GIADA dust collector and theExpand
A ring system detected around the Centaur (10199) Chariklo
Observations of a multichord stellar occultation revealed the presence of a ring system around (10199) Chariklo, which is a Centaur—that is, one of a class of small objects orbiting primarily between Jupiter and Neptune—with an equivalent radius of 124  9 kilometres. Expand