The gas cloud moved closer to him, and then higher, right up to his face.

A gas cloud, in the shape of a small dog.

The gas cloud hung over the station, and killed 3,000 people.

I could see myself already as a cloud of gas.

Our sun formed from a cloud of thin gas about five billion years ago.

That's our last cover, actually, because otherwise by this time we'd be a gas cloud!

The leading three men had run straight into the gas cloud without knowing it.

In a very short time it will become a cloud of gas.

Humans were not the only ones that needed protection from gas clouds, however.

In the beginning, everything was a cloud of gas, chaos and darkness.