The family had built themselves a self-sustaining colony, capable of expanding to meet the growing population.

Free transport back to Earth or any other of the self-sustaining colonies.

Long-term mining and exploitation can't be done by anything but a self-sustaining colony.

I believe that we will eventually establish self-sustaining colonies on Mars, and other bodies in the solar system, although probably not within the next 100 years.

But let's imagine that we wanted to create a 100-person self-sustaining colony on the moon.

The minimum population and supporting equipment to make a self-sustaining colony.

They were actually on the verge of becoming a viable, self-sustaining colony when the Hadenmen attacked.

To honor them, our nation should create a self-sustaining lunar colony by the year 2015.

Scientists are believed to have created about a dozen self-sustaining colonies of stem cells, each originating from a separate embryo.

The White House has said that 60 self-sustaining colonies of cells, or lines, exist.