MONSTERS OF THE COSMOS - Symphony of Science
Video sources:
NOVA - Mystery of the Milky Way
Through The Wormhole: The Riddle of Black Holes
Who's Afraid of a Big Black Hole (BBC)
Swallowed by a Black Hole (BBC)

Lyrics:

There are monsters out in the cosmos
That can swallow entire stars
Inside these equations, there's a monster
Anything that strays too close will be pulled in

Gravity is infinite at the center of black hole
Time stops - space makes no sense

Every galaxy has got one big black hole in the middle
And millions of smaller black holes

An anomaly of gravity so strange
Nothing is more seductive

There are monsters out in the cosmos
That can swallow entire stars
That can destroy space itself
Completely invisible
Anything that strays too close will be pulled in

In the last century, black holes have gone from being mathematical curiosities
To real objects in the cosmos
Seemingly crucial to the formation of galaxies
Nothing can escape it, even light

There must be millions and millions of black holes
Zipping around our galaxy, nothing there to light them up

At the heart of a large black hole is a singularity
It's a point of inifinite density
The accepted laws of physics break down

Black holes form when giant stars run out of fuel
And collapse under their own weight
Dark remnants of burned out stars
Truth is stranger than sci-fi

(refrain)

Nothing is bigger and scarier than a black hole
A boundary between the known universe
And a place beyond the reach of science