Dust is nowhere near as hot as a star, therefore optical telescopes cannot observe it.

尘埃温度远不及恒星，所以光学望远镜难以观测到。

youdao

Dust is nowhere near as hot as a star, therefore optical telescopes cannot observe it.

尘埃温度远不及恒星，所以光学望远镜难以观测到。

youdao