This is because most cosmologists reckon that the Big Bang could not have generated nearly enough ordinary matter--dark or light--to create a closed universe.

ECONOMIST: The dark side of cosmology

It is a closed social network in a universe designed to be open.

FORBES: The Importance of Facebook's Graph Search

It was my editorial duty to be sure that every story didn't end with the writer sipping sundowners (those writers...) by a campfire somewhere, pondering the universe as the African night closed around.

FORBES: Editor's Note