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Editorial to the Special Issue “Space Missions to Small Bodies: Results and Future Activities”
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Main Results from the ISSI International Team “Characterization of 67P Cometary Activity”
1. Introduction The ESA’s Rosetta mission orbited the 67P/Churyumov-Gerasimenko comet from 2014 to 2016 and escorted it from pre- to post-perihelion. During pre-perihelion, the comet was not very active and was mainly affected by previous perihelion passages and processes far from the sun (e.g., cosmic rays hitting the nucleus, fallout self-cleaning). Perihelion (13 August 2015) was the peak of activity due to water ice sublimation and the consequent dust and gas emissions.
Pyroxene and Hydroxyl Signatures in Vesta Newly Calibrated Data from Dawn Mission
Abstract : Thanks to the VIR spectrometer onboard NASA’s Dawn spacecraft, which orbited Vesta in 2011–2012, thousands of hyperspectral images of its surface have been collected. The mission confirmed the HED (Howardite–Eucrite–Diogenite) meteorite composition of Vesta. Moreover, the VIR spectrometer detected the 2.8 µm absorption band, due to the presence of the OH molecule.
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