Stardust Cloud

"The surface of the earth is the shore of the cosmic ocean. On this shore, we've learned most of what we know. Recently we've waded a little way out, maybe ankle-deep, and the water seems inviting. Some part of our being knows this is where we came from. We long to return. And we can! The cosmos is also within us -- we are made of starstuff. We are a way for the cosmos to know itself."

--- Carl Sagan (1934-1996)