Spacecraft sample collection and subsurface excavation of asteroid (101955) Bennu
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- D. S. Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- C. D. Adam
- KinetX, Simi Valley, CA, USA.
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- A. J. Allen
- Department of Physics, University of Central Florida, Orlando, FL, USA.
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- R.-L. Ballouz
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- O. S. Barnouin
- The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA.
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- K. J. Becker
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- T. Becker
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- C. A. Bennett
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- E. B. Bierhaus
- Lockheed Martin Space, Littleton, CO, USA.
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- B. J. Bos
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- R. D. Burns
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- H. Campins
- Department of Physics, University of Central Florida, Orlando, FL, USA.
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- Y. Cho
- Department of Earth and Planetary Environmental Science, University of Tokyo, Tokyo, Japan.
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- P. R. Christensen
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA.
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- E. C. A. Church
- Lockheed Martin Space, Littleton, CO, USA.
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- B. E. Clark
- Department of Physics and Astronomy, Ithaca College, Ithaca, NY, USA.
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- H. C. Connolly
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- M. G. Daly
- Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada.
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- D. N. DellaGiustina
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- C. Y. Drouet d’Aubigny
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- J. P. Emery
- Department of Astronomy and Planetary Science, Northern Arizona University, Flagstaff, AZ, USA.
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- H. L. Enos
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- S. Freund Kasper
- Lockheed Martin Space, Littleton, CO, USA.
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- J. B. Garvin
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- K. Getzandanner
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- D. R. Golish
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- V. E. Hamilton
- Southwest Research Institute, Boulder, CO, USA.
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- C. W. Hergenrother
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- H. H. Kaplan
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- L. P. Keller
- Johnson Space Center, Houston, TX, USA.
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- E. J. Lessac-Chenen
- KinetX, Simi Valley, CA, USA.
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- A. J. Liounis
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- H. Ma
- Lockheed Martin Space, Littleton, CO, USA.
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- L. K. McCarthy
- KinetX, Simi Valley, CA, USA.
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- B. D. Miller
- Lockheed Martin Space, Littleton, CO, USA.
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- M. C. Moreau
- KinetX, Simi Valley, CA, USA.
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- T. Morota
- Department of Earth and Planetary Environmental Science, University of Tokyo, Tokyo, Japan.
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- D. S. Nelson
- KinetX, Simi Valley, CA, USA.
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- J. O. Nolau
- Department of Physics, University of Central Florida, Orlando, FL, USA.
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- R. Olds
- Lockheed Martin Space, Littleton, CO, USA.
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- M. Pajola
- Astronomical Observatory of Padova, Italian National Institute for Astrophysics (INAF), Padova, Italy.
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- J. Y. Pelgrift
- KinetX, Simi Valley, CA, USA.
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- A. T. Polit
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- M. A. Ravine
- Malin Space Science Systems, San Diego, CA, USA.
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- D. C. Reuter
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- B. Rizk
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- B. Rozitis
- School of Physical Sciences, Open University, Milton Keynes, UK.
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- A. J. Ryan
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- E. M. Sahr
- KinetX, Simi Valley, CA, USA.
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- N. Sakatani
- Department of Physics, Rikkyo University, Tokyo, Japan.
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- J. A. Seabrook
- Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada.
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- S. H. Selznick
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- M. A. Skeen
- Lockheed Martin Space, Littleton, CO, USA.
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- A. A. Simon
- Goddard Space Flight Center, Greenbelt, MD, USA.
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- S. Sugita
- Department of Earth and Planetary Environmental Science, University of Tokyo, Tokyo, Japan.
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- K. J. Walsh
- Southwest Research Institute, Boulder, CO, USA.
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- M. M. Westermann
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- C. W. V. Wolner
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
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- K. Yumoto
- Department of Earth and Planetary Environmental Science, University of Tokyo, Tokyo, Japan.
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説明
<jats:p>Carbonaceous asteroids, such as (101955) Bennu, preserve material from the early Solar System, including volatile compounds and organic molecules. We report spacecraft imaging and spectral data collected during and after retrieval of a sample from Bennu’s surface. The sampling event mobilized rocks and dust into a debris plume, excavating a 9-meter-long elliptical crater. This exposed material is darker, spectrally redder, and more abundant in fine particulates than the original surface. The bulk density of the displaced subsurface material was 500 to 700 kilograms per cubic meter, which is about half that of the whole asteroid. Particulates that landed on instrument optics spectrally resemble aqueously altered carbonaceous meteorites. The spacecraft stored 250 ± 101 grams of material, which will be delivered to Earth in 2023.</jats:p>
収録刊行物
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- Science
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Science 377 (6603), 285-291, 2022-07-15
American Association for the Advancement of Science (AAAS)
