Results 21 to 30 of about 131,137 (325)

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

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

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

Multisatellite Task Allocation and Orbit Planning for Asteroid Terminal Defence

open access: yesAerospace, 2022
Near-Earth asteroids are a great threat to the Earth, especially potential rendezvous and collision asteroids. To protect the Earth from an asteroid collision, it is necessary to investigate the asteroid defence problem.
Yuelong Luo   +4 more
doaj   +1 more source

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

The Active Asteroids [PDF]

open access: yesThe Astronomical Journal, 2012
25 pages, 18 figures; This chapter is to appear in the book ASTEROIDS IV, part of the University of Arizona Space Science Series, edited by P. Michel, F.
Jessica Agarwal   +2 more
openaire   +7 more sources

Optical Imaging Instruments and Main Science Results of Small Body Exploration: A Review

open access: yesIEEE Access, 2021
Compared with planets and their moons, small bodies retain the characteristics of their early formation. Therefore small bodies, especially Near Earth Asteroids (NEA), have become one of the most valuable targets in space exploration. This paper presents
Fanlu Wu, Yanchao Fan
doaj   +1 more source

The ESA Hera Mission: Detailed Characterization of the DART Impact Outcome and of the Binary Asteroid (65803) Didymos

open access: yesThe Planetary Science Journal, 2022
Hera is a planetary defense mission under development in the Space Safety and Security Program of the European Space Agency for launch in 2024 October.
P. Michel   +47 more
semanticscholar   +1 more source

Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu

open access: yesNature Astronomy, 2021
C-type asteroids1 are considered to be primitive small Solar System bodies enriched in water and organics, providing clues to the origin and evolution of the Solar System and the building blocks of life.
T. Yada   +101 more
semanticscholar   +1 more source

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