We're looking right back to the beginning of the universe.

A system is the region of the universe under study.

The history of the universe in real time, however, would look very different.

Without us the heat death of the universe would begin.

The Earth is about one third the age of the universe.

The earth is the center of the universe, and onto other things you say.

No one could tell what part they might have to play in the history of the universe.

Their race, along with the rest of the universe, was brought back by the Doctor.

After all, 96 percent of the universe is still waiting to be found.

I never did get to the end of the universe.