What Happened Before the Big Bang?

By Stephanie Pappas The Big Bang is commonly thought of as the start of it all: About 13.8 billion years ago, the observable universe went boom and expanded into being. But what were things like before the Big Bang? Short answer: We don’t know. Long answer: It could have been a lot of things, eachContinue reading “What Happened Before the Big Bang?”

Did Scientists Actually Spot Evidence Of Another Universe?

The detailed, all-sky picture of the infant universe created from nine years of WMAP data. The image reveals 13.77 billion year old temperature fluctuations (shown as color differences) that correspond to the seeds that grew to become the galaxies. The signal from our galaxy was subtracted using the multi-frequency data. This image shows a temperatureContinue reading “Did Scientists Actually Spot Evidence Of Another Universe?”

Our Galaxy Has Already Died Once. Now We Are in Its Second Life.

The Milky Way is a zombie. No, not really, it doesn’t go around eating other galaxies’ brains. But it did “die” once, before flaring back to life. That’s what a Japanese scientist has ascertained after peering into the chemical compositions of our galaxy’s stars. In a large section of the Milky Way, the stars canContinue reading “Our Galaxy Has Already Died Once. Now We Are in Its Second Life.”