Capture and tracing interstellar and interplanetary dust particles through the China Space Station
Matter serves as the foundation of the universe,and its composition is crucial for understanding the universe.Interstellar and interplanetary dust particles(ISD and IDP)carry rich information on the formation and evolution of stars,galaxies,and the solar system.Currently,our understanding of ISD and IDP is mainly derived from indirect information(e.g.,extinction and thermal emission detections),making it challenging to accurately determine their key characteristics such as chemical composition,structural morphology,size distribution,and origin.Over the past 60 years,continuous efforts have been made to explore cosmic dust more directly,utilizing sounding rockets,space shuttles,space stations,satellites,and deep space probes.Data obtained mainly from in-situ detection or sample return have been used for statistical studies and material composition analysis,however,very few tracing studies have been conducted.This review summarizes the state-of-the-art indirect studies on the properties of ISD and IPD,and the current status of the existing in-situ detection projects.We propose to utilize the Chinese Space Station platform for the first time to capture and trace cosmic dust particles.We aim to accurately determine whether the returned dust particles are of interstellar or interplanetary origin and to conduct detailed experimental physicochemical analyses of the returned and traced dust particles.
interstellar dust particlesinterplanetary dust particlesChina Space Station
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