Results 21 to 30 of about 76,745 (212)

RODZINY ASTEROID [PDF]

open access: yesPrzegląd Geofizyczny, 2021
Liczba asteroid o wyznaczonych orbitach przekracza obecnie 500 tysięcy. Wiele z nich jest ze sobą powiązanych genetycznie, gdyż stanowią one produkt uszkodzenia lub nawet rozbicia większej asteroidy w procesie zderzeniowym.
Jacek Leliwa-Kopystyński
doaj   +1 more source

Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

open access: yesScience, 2023
The Hayabusa2 spacecraft collected samples from the surface of the carbonaceous near-Earth asteroid (162173) Ryugu and brought them to Earth. The samples were expected to contain organic molecules, which record processes that occurred in the early Solar ...
H. Naraoka   +114 more
semanticscholar   +1 more source

Synergistic approach of asteroid exploitation and planetary protection [PDF]

open access: yes, 2012
The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale ...
Sanchez Cuartielles, Joan-Pau   +1 more
core   +4 more sources

Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

open access: yesScience, 2022
Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the Hayabusa2 spacecraft.
T. Yokoyama   +148 more
semanticscholar   +1 more source

Feasibility Analysis of Autonomous Orbit Determination and Gravity-Field Recovery around Asteroids Using Inter-Satellite Range Data

open access: yesAerospace, 2023
Autonomous navigation and orbit determination are key problems of asteroid exploration missions. Inter-satellite range link is a type of measurement widely used in the orbit determination of Earth satellites, but not so widely used in missions around ...
Haohan Li, Xiyun Hou
doaj   +1 more source

A smart cloud approach to asteroid deflection [PDF]

open access: yes, 2011
This paper presents a novel idea for the successful deflection of asteroids. Adapted initially from the kinematic impactor approach, this new concept – Smart Cloud – combines the relative benefits of the ion beam shepard in providing a large cloud of ...
Vasile, Massimiliano, Gibbings, Alison
core   +3 more sources

The first complete mitochondrial genome of the Northern Pacific deep-sea goniasterid sea star Ceramaster japonicus (Sladen, 1889) determined using NGS-based shotgun sequencing

open access: yesMitochondrial DNA. Part B. Resources, 2021
The full mitogenome of an ethanol-preserved museum specimen of Ceramaster japonicus was determined using the NGS Illumina MiSeq platform. The specimen was collected from Tosa Bay, Japan, facing the Pacific Ocean (33.0781 N 134.0601 E), at 700 m depth in ...
Masaki Yamamoto   +6 more
doaj   +1 more source

Uracil in the carbonaceous asteroid (162173) Ryugu

open access: yesNature Communications, 2023
The pristine sample from the near-Earth carbonaceous asteroid (162173) Ryugu collected by the Hayabusa2 spacecraft enabled us to analyze the pristine extraterrestrial material without uncontrolled exposure to the Earth’s atmosphere and biosphere.
Y. Oba   +31 more
semanticscholar   +1 more source

Asteroid deflection and exploitation : possible synergies [PDF]

open access: yes, 2011
The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale ...
Sanchez Cuartielles, Joan-Pau   +1 more
core   +3 more sources

On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective

open access: yesProceedings of the Japan Academy. Series B, Physical and biological sciences, 2022
Presented here are the observations and interpretations from a comprehensive analysis of 16 representative particles returned from the C-type asteroid Ryugu by the Hayabusa2 mission.
Eizo Nakamura   +89 more
semanticscholar   +1 more source

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