The main component of most meteorites is silicon dioxide, which is similar to the main component of stones on earth. Some meteorites are mainly composed of iron and nickel, and a few meteorites contain a lot of rare metals. Generally speaking, meteorites will not produce harmful radiation to human body as long as they do not contain high radioactive metal substances such as uranium, thorium and radium.
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20 18 10, a residential building in Komaki, Aichi Prefecture, Japan was smashed out of a pit by a stone-like object a few days ago. After expert verification, the "culprit" turned out to be a meteorite with a history of 4.5 billion years.