All engine running.

Absolutely genius.

Get this.

Welcome.

This is the show where we bring you science.

What that essentially means is discovery is

advances, research, technology, unbelievable.

Without further ado, this is the Naked Scientists.

Hello, welcome to this week's Naked Scientists,

the program where we bring you the latest breakthroughs

and talk to some of the biggest

movers and shakers in the fields of science, technology and medicine. I'm Chris Smith

and this week the Titan of Science who discovered the accelerating expansion of the universe and

ultimately gave us dark energy. I'm talking to Brian Schmidt. From Cambridge

University's Institute of Continuing Education, this is the Naked Scientists. A century ago the stargazer Edwin Hubble shook the world of astronomy when he presented findings showing that the universe wasn't standing still.

It was growing, blowing up like a balloon.

But he could only look so far in space

because his measurements relied on a class of stars

called keffid variables, which throb in brightness with a regular rhythm

that depends upon how large they are. So the rate of their pulsations told him how big they were

and that in turn enabled him to work out based on their brightness

how far away they were

...