On the left, marked by red gas and dust clouds, is irregular galaxy M82.

左边，以红色气体和尘埃云为标志的，是不规则星系m 82。

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The M17 SWex "dragon" is hidden within dust clouds that are opaque to visible light.

藏在尘埃云中的M17 SWex“龙”在可视光中是看不透的。

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Earthlings can only wonder at the dense star clusters and massive gas and dust clouds that reside there.

地球生物只能对着那儿致密的星团和大质量气体尘埃望洋兴叹。

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They say it would have caused huge clouds of dust to block sunlight.

VOA: special.2009.01.20

The nebulae,he said, were clouds of atoms and dust.

VOA: special.2009.04.29

Unlike light waves, radio waves are not blocked by the dust clouds.

BBC: By BBC News Online Science Editor Dr David Whitehouse

The birth and death phases of stars, for example, are associated with heavy dust clouds that give off an infra-red signal which might resemble the swarm of artificial satellites constituting a Dyson sphere.

ECONOMIST: Is it time for a new approach to finding extraterrestrials?

This year the students had to program their SPHERES to deploy dust clouds that could remove space junk from orbit, dock with another satellite to harvest its parts, and maneuver through an unknown field full of debris.

MSN: High schoolers control satellites aboard space station