For almost a century, we have known that the universe is expanding. For several decades, evidence has suggested that the expansion of the universe is accelerating. Crucial to those estimates were the ...

Is the universe exploding—expanding swiftly into the uttermost reaches of space? Scientists have been puzzling over the startling speculation ever since the 1920s, when Mount Wilson Astronomers Edwin ...

How did we get here? Where are we going? And how long will it take? These questions are as old as humanity itself, and, if they’ve already been asked by other species elsewhere in the Universe, ...

Light coming from an explosion in the early universe has illuminated a black hole that astronomers think could expand their understanding of how the celestial objects form. Three billion years ago, a ...