Evidence for multi-fragmentation and mass shedding of boulders on rubble-pile binary asteroid system (65803) Didymos

M Pajola, F Tusberti, A Lucchetti, O Barnouin… - Nature …, 2024 - nature.com
Asteroids smaller than 10 km are thought to be rubble piles formed from the reaccumulation
of fragments produced in the catastrophic disruption of parent bodies. Ground-based …

Fast boulder fracturing by thermal fatigue detected on stony asteroids

A Lucchetti, S Cambioni, R Nakano… - Nature …, 2024 - nature.com
Spacecraft observations revealed that rocks on carbonaceous asteroids, which constitute
the most numerous class by composition, can develop millimeter-to-meter-scale fractures …

Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface

KJ Walsh, ER Jawin, RL Ballouz, OS Barnouin… - Nature …, 2019 - nature.com
Small, kilometre-sized near-Earth asteroids are expected to have young and frequently
refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid …

The bearing capacity of asteroid (65803) Didymos estimated from boulder tracks

J Bigot, P Lombardo, N Murdoch, DJ Scheeres… - Nature …, 2024 - nature.com
The bearing capacity-the ability of a surface to support applied loads-is an important
parameter for understanding and predicting the response of a surface. Previous work has …

Variations in color and reflectance on the surface of asteroid (101955) Bennu

DN DellaGiustina, KN Burke, KJ Walsh, PH Smith… - Science, 2020 - science.org
INTRODUCTION The color and reflectance of asteroids can be used to infer their
compositions and histories. Variations in these spectrophotometric properties are driven by …

Bennu's near-Earth lifetime of 1.75 million years inferred from craters on its boulders

RL Ballouz, KJ Walsh, OS Barnouin, DN DellaGiustina… - Nature, 2020 - nature.com
An asteroid's history is determined in large part by its strength against collisions with other
objects,(impact strength). Laboratory experiments on centimetre-scale meteorites have been …

[HTML][HTML] Boulder size and shape distributions on asteroid Ryugu

T Michikami, C Honda, H Miyamoto, M Hirabayashi… - Icarus, 2019 - Elsevier
Abstract In 2018, the Japanese spacecraft Hayabusa2, arrived at the small asteroid Ryugu.
The surface of this C-type asteroid is covered with numerous boulders whose size and …

The geology and evolution of the Near-Earth binary asteroid system (65803) Didymos

O Barnouin, RL Ballouz, S Marchi, JB Vincent… - Nature …, 2024 - nature.com
Images collected during NASA's Double Asteroid Redirection Test (DART) mission provide
the first resolved views of the Didymos binary asteroid system. These images reveal that the …

Global patterns of recent mass movement on asteroid (101955) Bennu

ER Jawin, KJ Walsh, OS Barnouin… - Journal of …, 2020 - Wiley Online Library
The exploration of near‐Earth asteroids has revealed dynamic surfaces characterized by
mobile, unconsolidated material that responds to local geophysical gradients, resulting in …

In situ evidence of thermally induced rock breakdown widespread on Bennu's surface

JL Molaro, KJ Walsh, ER Jawin, RL Ballouz… - Nature …, 2020 - nature.com
Rock breakdown due to diurnal thermal cycling has been hypothesized to drive boulder
degradation and regolith production on airless bodies. Numerous studies have invoked its …