A Universe from Nothing: Why There Is Something Rather than Nothing

by Lawrence Krauss

The Initial Mystery that attends any journey is: how did the traveler reach his starting point in the first place?

“Day with No Yesterday.”

universe, because, if the galaxies were once moving faster, they would

One of the most poetic facts I know about the universe is that essentially every atom in your body was once inside a star that exploded.

Moreover, the atoms in your left hand probably came from a different star than did those in your right. We are all, literally, star children, and our bodies made of stardust.

Over the course of the history of our galaxy, about 200 million stars have exploded. These myriad stars sacrificed themselves, if you wish, so that one day you could be born.

and, as a result, rare events happen all the time. Go out some night into the woods or desert where you can see stars and hold up your hand to the sky, making a tiny circle between your thumb and forefinger about the size of a dime. Hold it up to a dark patch of the sky where there are no visible stars. In that dark patch, with a large enough telescope of the type we now have in service today, you could discern perhaps 100,000 galaxies, each containing billions of stars.

had to be more than 100 times as much dark matter as visible matter in the universe.