Results 31 to 40 of about 33,871 (243)

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

Geosciences
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, Ryan Tappero, Timothy D. Glotch, George J. Flynn, Mehmet Yesiltas, Yoko Kebukawa, Leonard Flores, Marina E. Gemma, Gavin Piccione   +8 more
doaj   +1 more source

Organic Matter in the Asteroid Ryugu: What We Know So Far

Life, 2023
The Hayabusa2 mission was tasked with returning samples from the C-complex asteroid Ryugu (1999 JU3), in order to shed light on the formation, evolution and composition of such asteroids.
Christian Potiszil, Masahiro Yamanaka, Chie Sakaguchi, Tsutomu Ota, Hiroshi Kitagawa, Tak Kunihiro, Ryoji Tanaka, Katsura Kobayashi, Eizo Nakamura   +8 more
doaj   +1 more source

Compliant Robotics in Space: A Prospective Review of Soft and Deformable Systems for Space Missions

Advanced Intelligent Systems, Volume 7, Issue 7, July 2025.
Compliant robots are increasingly becoming integral to space exploration due to their adaptability, flexibility, and lightweight design. This article reviews categories such as soft, reconfigurable, and hyper‐redundant robots and their evolving role in enhancing space missions.
Hamed Rahimi Nohooji, Holger Voos
wiley   +1 more source

A Fully Autonomous On-Board GNC Methodology for Small-Body Environments Based on CNN Image Processing and MPCs

Aerospace
The increasing need for autonomy in space exploration missions is becoming more and more relevant in the design of missions to small bodies. The long communication latencies and sensitivity of the system to unplanned environmental perturbations mean ...
Pelayo Peñarroya, Alfredo Escalante, Thomas Frekhaug, Manuel Sanjurjo   +3 more
doaj   +1 more source

Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impacts on land [PDF]

Journal of the Serbian Chemical Society, 2003
Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O ...
PAVLE I. PREMOVIC
doaj  

Asteroid

, 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

Perspective Projection of an Ellipse and an Ellipsoid for Analytical View Factor Evaluation

Heat Transfer, EarlyView.
ABSTRACT Radiative view factors are fundamental quantities for evaluating radiative heat transfer between different surfaces. While analytical expressions of view factors have been evaluated for various types of basic geometries, including circular disks and spheres, extending these solutions to more complex geometries, such as ellipses and ellipsoids ...
Kaname Sasaki
wiley   +1 more source

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, EarlyView.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

ASTEROIDS

Rudarsko-geološko-naftni zbornik, 2016
Asteroids are the largest minor bodies in the Solar System. Nowadays they are in the research focus due to several facts about them: first, a subclass of asteroids can collide with Earth, and consequences of such a collision are dramatic. Second, they are now seen as source of materials that are becoming scarce on Earth, and they will be needed in ...
openaire   +3 more sources