S. Mottola
A5029774309- Astro and Planetary Science
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Isotope Analysis in Ecology
- Space Exploration and Technology
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Geology and Paleoclimatology Research
- Astronomical and nuclear sciences
- Astrophysics and Star Formation Studies
- Nuclear Physics and Applications
- Spacecraft and Cryogenic Technologies
- Astronomy and Astrophysical Research
- Geological and Geochemical Analysis
- Solar and Space Plasma Dynamics
- Spacecraft Design and Technology
- Atmospheric Ozone and Climate
- Space Satellite Systems and Control
- High-pressure geophysics and materials
- Geomagnetism and Paleomagnetism Studies
- Space Science and Extraterrestrial Life
- Geophysics and Gravity Measurements
- History and Developments in Astronomy
- SAS software applications and methods
- CCD and CMOS Imaging Sensors
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2015-2024
Planet
2014-2024
Korea Astronomy and Space Science Institute
2021
Institut für Lungenforschung
2013-2019
Max Planck Institute for Solar System Research
2018
National Central University
2017
Centre National d'Études Spatiales
2017
Planetary Science Institute
1994-2015
Osservatorio Astronomico di Padova
2015
John Wiley & Sons (United States)
2015
The Dawn spacecraft targeted 4 Vesta, believed to be a remnant intact protoplanet from the earliest epoch of solar system formation, based on analyses howardite-eucrite-diogenite (HED) meteorites that indicate differentiated parent body. observations reveal giant basin at Vesta's south pole, whose excavation was sufficient produce Vesta-family asteroids (Vestoids) and HED meteorites. spatially resolved mineralogy surface reflects composition meteorites, confirming formation crust by melting...
Images from the OSIRIS scientific imaging system onboard Rosetta show that nucleus of 67P/Churyumov-Gerasimenko consists two lobes connected by a short neck. The has bulk density less than half water. Activity at distance Sun >3 astronomical units is predominantly neck, where jets have been seen consistently. rotates about principal axis momentum. surface morphology suggests removal larger volumes material, possibly via explosive release subsurface pressure or creation overhangs sublimation,...
Critical measurements for understanding accretion and the dust/gas ratio in solar nebula, where planets were forming 4.5 billion years ago, are being obtained by GIADA (Grain Impact Analyser Dust Accumulator) experiment on European Space Agency's Rosetta spacecraft orbiting comet 67P/Churyumov-Gerasimenko. Between 3.6 3.4 astronomical units inbound, OSIRIS (Optical, Spectroscopic, Infrared Remote Imaging System) detected 35 outflowing grains of mass 10(-10) to 10(-7) kilograms, 48 10(-5)...
The VIRTIS (Visible, Infrared and Thermal Imaging Spectrometer) instrument on board the Rosetta spacecraft has provided evidence of carbon-bearing compounds nucleus comet 67P/Churyumov-Gerasimenko. very low reflectance (normal albedo 0.060 ± 0.003 at 0.55 micrometers), spectral slopes in visible infrared ranges (5 to 25 1.5 5% kÅ(-1)), broad absorption feature 2.9-to-3.6-micrometer range present across entire illuminated surface are compatible with opaque minerals associated nonvolatile...
Images of comet 67P/Churyumov-Gerasimenko acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) imaging system onboard European Space Agency’s Rosetta spacecraft at scales better than 0.8 meter per pixel show a wide variety different structures textures. The data importance airfall, surface dust transport, mass wasting, insolation weathering for cometary evolution, they offer some support subsurface fluidization models loss through ejection large chunks material.
The Philae lander, part of the Rosetta mission to investigate comet 67P/Churyumov-Gerasimenko, was delivered cometary surface in November 2014. Here we report precise circumstances multiple landings Philae, including bouncing trajectory and rebound parameters, based on engineering data conjunction with operational instrument data. These also provide information mechanical properties (strength layering) surface. first touchdown site, Agilkia, appears have a granular soft (with compressive...
A New Dawn Since 17 July 2011, NASA's spacecraft has been orbiting the asteroid Vesta—the second most massive and third largest in solar system (see cover). Russell et al. (p. 684 ) use Dawn's observations to confirm that Vesta is a small differentiated planetary body with an inner core, represents surviving proto-planet from earliest epoch of formation; also confirmed as source howardite-eucrite-diogenite (HED) meteorites. Jaumann 687 report on asteroid's overall geometry topography, based...
Vesta is a large differentiated rocky body in the main asteroid belt that accreted within first few million years after formation of earliest solar system solids. The Dawn spacecraft extensively imaged Vesta's surface, revealing collision-dominated history. Results show cratering record has strong north-south dichotomy. northern heavily cratered terrains retain much their southern hemisphere was reset, however, by two major collisions more recent times. We estimate youngest these impact...
We analyzed more than 200 OSIRIS NAC images with a pixel scale of 0.9−2.4 m/pixel comet 67P/Churyumov-Gerasimenko (67P) that have been acquired from onboard the Rosetta spacecraft in August and September 2014 using stereo-photogrammetric methods (SPG). derived improved position pointing data for high-resolution shape model consists about 16 million facets (2 m horizontal sampling) typical vertical accuracy at decimeter scale. From this model, we derive volume northern hemisphere 9.35 km3 ±...
On 6 March 2015, Dawn arrived at Ceres to find a dark, desiccated surface punctuated by small, bright areas. Parts of Ceres’ are heavily cratered, but the largest expected craters absent. appears gravitationally relaxed only longest wavelengths, implying mechanically strong lithosphere with weaker deep interior. dry exterior displays hydroxylated silicates, including ammoniated clays endogenous origin. The possibility abundant volatiles depth is supported geomorphologic features such as flat...
Context. The complex shape of comet 67P and its oblique rotation axis cause pronounced seasonal effects. Irradiation hence activity vary strongly.
Context. We investigate the formation and evolution of comet nuclei other trans-Neptunian objects (TNOs) in solar nebula primordial disk prior to giant planet orbit instability foreseen by Nice model.
ABSTRACT 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 the GIADA collector and OSIRIS Wide Angle Camera Narrow since 2014 August will continue until 2016 September. Detections single allow us to estimate anisotropic flux from 67P, infer loss rate size distribution at surface sunlit nucleus, see whether 67P evolves in time. velocity orbiter, relative is much lower measured GIADA,...
A New Dawn Since 17 July 2011, NASA's spacecraft has been orbiting the asteroid Vesta—the second most massive and third largest in solar system (see cover). Russell et al. (p. 684 ) use Dawn's observations to confirm that Vesta is a small differentiated planetary body with an inner core, represents surviving proto-planet from earliest epoch of formation; also confirmed as source howardite-eucrite-diogenite (HED) meteorites. Jaumann 687 report on asteroid's overall geometry topography, based...
Context. We present an investigation of the surface properties areas on nucleus comet 67P/Churyumov-Gerasimenko.