He was given alien science to fashion devices unknown on Earth.

His fear of the unknown being on the screen must have been unimaginably great.

Unknown to me, on the very same day a local council was announcing its own particular answer to the problem.

Technology and the ways of modern living were unknown on Thamber.

The third member of the new group was an unknown on the British 'pop' music scene.

His body had many special abilities unknown on Earth, but it could not do without food indefinitely.

The book did tell him that newspapers were unknown on Skid.

Such a thing as the child left alone to die in the hallway was unknown on the marsh.

While this was under debate and unknown to the court, to wit, on the 19th.

Whitt left the area for parts unknown on September 27, 1921.