星际气体 interstellar gas
- 光学天文学受到最直接的影响,因为虽然星际气体是完全透明的,但尘埃却不是。
Optical astronomy is most directly affected, for although interstellar gas is perfectly transparent, the dust is not. - 光波和无线电波能被星际气体和尘埃吸收及散射。
Light and radio waves are absorbed and scattered by interstellar gas and dust. - 在经典黑暗星云中,蛇是星际气体和尘埃组成的卷须,长约650光年。
A classic dark nebula, the Snake is a tendril of interstellar gas and dust about 650 light years away.
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