Oort cloud

"It is unusually close in to the system for an Oort cloud."

Space probes have yet to reach the area of the Oort cloud.

"They will want to know we've discovered another Oort cloud, too.

There have been many theories about Oort clouds and what they contain.

There are lots of comets in your average Oort cloud.

Out there in the Oort cloud, speeds got even slower.

I lurked in this system's Oort cloud for more than a day, trying to make up my mind.

And then there were all the missions that wound up in Oort clouds.

Mac had cut off her arm with a power laser, out in the Oort cloud.

A third of the scattered disc's population is likely to end up in the Oort cloud after 2.5 billion years.

The two spacecraft will finish their passage through the Oort cloud in another 20,000 years or so.

There are also minor colonies set in the Oort cloud beyond the solar system itself.

Therefore, the current cumulative mass of the Oort cloud is far less than was once suspected.

"Can't prove the Oort cloud affected it in any way.

"How long has it been since the Oort cloud?

And whatever it has to say about that Oort cloud artifact."

Such comets are believed to originate from the Oort cloud.

"It was definitely established that the organism had been carried from the Oort cloud?"

Wan's machine in the Oort cloud was broadcasting to the whole solar system.

For that reason, the great ship now kept station in the ice halo of the system's Oort cloud.

The scattered disc might still be supplying the Oort cloud with material.

This explains the nearly spherical shape of the outer Oort cloud.

If correct, this would have significant implications regarding the formation and structure of the Oort cloud.

After that he went out to the Oort Cloud to commune with himself.

The battle was out beyond the Oort cloud, and we've been regrouping."