First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu

Bibcode
2022SciA....8O7239O
DOI
10.1126/sciadv.abo7239
Okazaki R. et al; Tatsumi E.
Referencia bibliográfica

Science Advance, 8, eabo7239

Fecha de publicación:
11
2022
Número de autores
2
Número de autores del IAC
1
Número de citas
9
Número de citas referidas
9
Descripción
The Hayabusa2 spacecraft returned to Earth from the asteroid 162173 Ryugu on 6 December 2020. One day after the recovery, the gas species retained in the sample container were extracted and measured on-site and stored in gas collection bottles. The container gas consists of helium and neon with an extraterrestrial 3He/4He and 20Ne/22Ne ratios, along with some contaminant terrestrial atmospheric gases. A mixture of solar and Earth’s atmo-spheric gas is the best explanation for the container gas composition. Fragmentation of Ryugu grains within the sample container is discussed on the basis of the estimated amount of indigenous He and the size distribution of the recovered Ryugu grains. This is the first successful return of gas species from a near-Earth asteroid.
Proyectos relacionados
Imagen del Proyecto
Pequeños Cuerpos del Sistema Solar

Este Proyecto estudia las propiedades físicas y composicionales de los llamados pequeños cuerpos del Sistema Solar, que incluyen asteroides, objetos helados y cometas. Entre los grupos de mayor interés destacan los objetos trans-neptunianos (TNOs), incluyendo los objetos más lejanos detectados hasta la fecha (Extreme-TNOs o ETNOs); los cometas, y

Julia de
León Cruz
En ejecución
Tipo
Con árbitro
Meteoritos
Sistema Solar y Sistemas Planetarios (SEYSS)

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