Results 51 to 60 of about 128,595 (322)

The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

open access: yesScience, 2019
Hayabusa2 at the asteroid Ryugu Asteroids fall to Earth in the form of meteorites, but these provide little information about their origins. The Japanese mission Hayabusa2 is designed to collect samples directly from the surface of an asteroid and return
K. Kitazato   +65 more
semanticscholar   +1 more source

MONET: The Minor Body Generator Tool at DART Lab

open access: yesSensors
Minor bodies exhibit considerable variability in shape and surface morphology, posing challenges for spacecraft operations, which are further compounded by highly non-linear dynamics and limited communication windows with Earth.
Carmine Buonagura   +2 more
doaj   +1 more source

Ion Beam Shepherd for Asteroid Deflection

open access: yes, 2011
We present a novel concept to impart a continuous thrust to an Earth threatening asteroid from a hovering spacecraft without need for physical attachment nor gravitational interaction with the asteroid.
Bombardelli, C., Pelaez, J.
core   +1 more source

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+2 more sources

Evidence for widespread hydrated minerals on asteroid (101955) Bennu

open access: yesNature Astronomy, 2019
Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of
V. Hamilton   +458 more
semanticscholar   +1 more source

Chemistry in Retrieved Ryugu Asteroid Samples Revealed by Non-Invasive X-ray Microanalyses: Pink-Beam Fluorescence CT and Tender-Energy Absorption Spectroscopy

open access: yesGeosciences
The Hayabusa2 space mission recently retrieved 5.4 g of material from asteroid Ryugu, providing the first direct access to pristine material from a carbonaceous asteroid. This study employs a novel combination of non-invasive synchrotron X-ray techniques
Paul Northrup   +8 more
doaj   +1 more source

Design and ballistic analysis of the mission for long-term study of the asteroid Apophis by a nanosatellite with an electric rocket propulsion system

open access: yesКосмические аппараты и технологии, 2020
The paper considers non-spherical objects with low gravitational attraction, such as asteroids, satellites of the planet and comets. We considered possibility of a mission to small bodies of the solar system of irregular shape on the example of the ...
O. L. Starinova   +2 more
doaj   +1 more source

Asteroid

open access: yes, 2022
Asteroids are rocky cosmic objects smaller than planets. There are about 1.1 to 1.9 million asteroids in our solar system. One of them is Bennu. September 11, 1999 LINEAR (Lincoln Near Earth Asteroid Research) Bennu was discovered in the near-earth asteroid survey.
openaire   +1 more source

Asteroid taxonomic signatures from photometric phase curves

open access: yes, 2012
We explore the correlation between an asteroid's taxonomy and photometric phase curve using the H, G12 photometric phase function, with the shape of the phase function described by the single parameter G12.
Antti Penttilä   +40 more
core   +1 more source

Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis

open access: yesNature Astronomy, 2019
Establishing the abundance and physical properties of regolith and boulders on asteroids is crucial for understanding the formation and degradation mechanisms at work on their surfaces.
D. DellaGiustina   +58 more
semanticscholar   +1 more source

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