Few readers cared that the Mars he described was scientifically impossible.

It was scientifically impossible for spy equipment to have been installed.

"It might be scientifically impossible," said Singing Rock quietly.

Koenig refuses to encourage false hope for a task that is scientifically impossible.

Many doctors, forty years ago, considered heart transplants scientifically impossible.

He said the medical evidence showed the informer's version of the murder was "scientifically impossible."

It was scientifically impossible, he declared, for a man to become invisible.

He believed that it was scientifically impossible for him to achieve progress and to become civilized if the gender separation continued as in Ottoman times.

I think he'd tell you we can't do the scientifically impossible, but we're certainly interested in hearing about your project.

This castration story which is a misnomer for a start, is scientifically impossible.