The sun could flick us out of existence at any time.
Some distance star could go supernova and a beam of cosmic rays would kill all life on earth.
Just use a good sunscreen...
Monty Python - Galaxy song
Everybody lives on a street in a city
Or a village or a town for what it’s worth
And they’re all inside a country which is part of a continent
That sits upon a planet known as Earth
And the Earth is a ball full of oceans and some mountains
Which is out there spinning silently in space
And living on that Earth are the plants and the animals
And also the entire human race
It’s a great big universe
And we’re all really puny
We’re just tiny little specks
About the size of Mickey Rooney
It’s big and black and inky
And we are small and dinky
It’s a big universe and we’re not
And we’re part of a vast interplanetary system
Stretching seven hundred billion miles long
With nine planets and a sun; we think the Earth’s the only one
That has life on it, although we could be wrong
Across the interstellar voids are a billion asteroids
Including meteors and Halley’s Comet too
And there’s over fifty moons floating out there like balloons
In a panoramic trillion-mile view
And still it’s all a speck amid a hundred billion stars
In a galaxy we call the Milky Way
It’s sixty thousand trillion miles from one end to the other
And still that’s just a fraction of the way
Cause there’s a hundred billion galaxies that stretch across the sky
Filled with constellations, planets, moons and stars
And still the universe extends to a place that never ends
Which is maybe just inside a little jar
It’s a great big universe
And we’re all really puny
We’re just tiny little specks
About the size of Mickey Rooney
Though we don’t know how it got here
We’re an important part here
It’s a big universe and it’s ours!