학술논문
Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites
ASTEROIDS
ASTEROIDS
Document Type
Academic Journal
Author
Jaumann, R.; Schmitz, N.; Ho, T.-M.; Schroder, S.E.; Otto, K.A.; Stephan, K.; Elgner, S.; Krohn, K.; Preusker, F.; Scholten, F.; Biele, J.; Ulamec, S.; Krause, C.; Sugita, S.; Mate, K.-D.; Roatsch, T.; Parekh, R.; Mottola, S.; Grott, M.; Michel, P.; Trauthan, F.; Koncz, A.; Michaelis', H.; Lange, C.; Grundmann, J.T.; Maibaum, M.; Sasaki, K.; Wolff, F.; Reill, J.; Moussi-Soffys, A.; Lorda, L.; Neumann, W.; Vincent, J.-B.; Wagner, R.; Bibring, J.-P.; Kameda, S.; Yano, H.; Watanabe, S.; Yoshikawa, M.; Tsuda, Y.; Okada, T.; Yoshimitsu, T.; Mimasu, Y.; Saiki, T.; Yabuta, H.; Rauer, H.; Honda, R.; Morota, T.; Yokota, Y.; Kouyama, T.
Source
Science. August 23, 2019, Vol. 365 Issue 6455, p817, 4 p.
Subject
Language
English
ISSN
0036-8075
Abstract
The near-Earth asteroid (162173) Ryugu is a 900-m-diameter dark object expected to contain primordial material from the solar nebula. The Mobile Asteroid Surface Scout (MASCOT) landed on Ryugu's surface on 3 October 2018. We present images from the MASCOT camera (MASCam) taken during the descent and while on the surface. The surface is covered by decimeter- to meter-sized rocks, with no deposits of fine-grained material. Rocks appear either bright, with smooth faces and sharp edges, or dark, with a cauliflower-like, crumbly surface. Close-up images of a rock of the latter type reveal a dark matrix with small, bright, spectrally different inclusions, implying that it did not experience extensive aqueous alteration. The inclusions appear similar to those in carbonaceous chondrite meteorites.