The universe is believed to have originated about 15 billion years ago as a dense, hot globule of gas expanding rapidly outward. At that time, the universe contained nothing but hydrogen and a small ...

The universe is believed to have originated about 15 billion years ago as a dense, hot globule of gas expanding rapidly outward. At that time, the universe contained nothing but hydrogen and a small ...

How exactly did the universe start and how did these processes determine its formation and evolution? This is what a study ...

The universe is big in both space and time and, for much of humankind’s history, was beyond the reach of our instruments and our minds. That changed dramatically in the 20th century.

Even before then, however, the frequency will reach that of the interstellar plasma and be buried in the noise—the stuff of the universe itself will mask the evidence of its origin.

Cosmic dust is crucial to the birth of stars and planets but why so much was present in the young Universe was a mystery.

That asymmetry, which favors matter to a very small degree, has puzzled scientists for many years. New research by UCLA physicists, published in the journal Physical Review Letters, offers a possible ...