Abstract
In this article, we review the literature for constraints on physical properties and mineral composition ofnear-Earth asteroids. We discuss spectroscopic and microscopic studies of optical and physical effectsand the surface structure of NEAs. This topic is of great importance to guess the nature and origin ofthese objects, and may help understanding investigation of extra-terrestrial bodies and providingindirect valuations of hazard on Earth via cosmic-ray bombardment, meteoroid, asteroid and cometimpacts.
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