Now black holes are dark against a dark sky.

One of them you heard about dark matter, dark energy.

Dark green.

Dark green.

Dark green.

Dark green.

So, in quantum mechanics, of course, you have dark energy and dark matter.

Very sad, dark.

So in terms of the big questions what is dark matter? What is dark energy?

It's dark. High noon on Titan is as dark as deep earth twilight on the Earth.

Who has dark circles?

It's all dark outside.

It's called dark matter.

Stumbling in the Dark

It was so dark.

It was getting dark.

The sky turned dark.

It's totally dark outside.

Her eyes are dark.

Dark green (in colour).

Dark green (in colour).

Dark green with foliage.

Dark green with foliage.

Dark green in color .

Dark green in color .

dark green in color.

dark green in color.

Well, not quite, not quite perfect you see, in intergalactic space intergalactic space is completely dark, pitch dark.

And she was dark, too.

It's great for dark circles.

The sky was completely dark.

Today s Dark Lords of Finance

The Dark Side of Physics

Don't go out after dark.

Don't walk alone after dark.

The boy feared the dark.

The Japanese have dark eyes.

He always wears dark glasses.

He always wears dark glasses.

He wore a dark sweater.

And the moon becomes dark,

And finally, for future endeavors, there are telescopes being designed specifically to address the questions of dark matter and dark energy ground based telescopes, and there are three space based telescopes that are in competition right now to be launched to investigate dark matter and dark energy.

In terms of dark matter, I said that we don't have any, you know, really persuasive argument for dark energy.

Shrugging our shoulders in the dark?

So, these are the Dark Ages.