Questions for ‘On the lookout for micro-missiles from space’
![860_space_dust.png](https://www.snexplores.org/wp-content/uploads/2019/11/860_space_dust.png)
Space dust rains down on Earth all the time. Most of these specks are too small to see. But when one the size of a sand grain hits the atmosphere, it blazes with visible light, becoming a micrometeor, or “shooting star.”
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