[Hawking]
For thousands of years
People have wondered about the universe
Did it stretch out forever
Or was there a limit

From the big bang to black holes
From dark matter to a possible big crunch
Our image of the universe today
Is full of strange sounding ideas

[Sagan}
How lucky we are to live in this time
The first moment in human history
When we are in fact visiting other worlds

The surface of the earth is the shore of the cosmic ocean
Recently we've waded a little way out
And the water seems inviting