Evidence could include changes in the chemical composition of the asteroid, the size distribution of debris surrounding it, or other thermal changes that could be detected from Earth.
证据包括从地球可探测到的小行星的化学组成、周围碎屑颗粒分布、或者温度方面的改变。
Photochemistry is the study of the chemical reactions and physical changes that result from interactions between matter and visible or ultraviolet light.
光化学是一门研究物质与可见光、紫外光见互相作用引起的化学反应及物理变化的学科。
Photochemistry is the study of the chemical reactions and physical changes that result from interactions between matter and visible or ultraviolet light.
光化学是一门研究物质与可见光、紫外光见互相作用引起的化学反应及物理变化的学科。
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