Scientists have peered into the early days of the universe, when it was about 1 billion years old, and discovered that things moved in slow motion compared with now. The finding supports Albert ...

Ever since Astronomer Edwin Hubble discovered in 1928 that the great galaxies, thinly scattered through space, are fleeing from one another, scientists have tried to explain the expanding universe, or ...

Time has an arrow: It only ever seems to move in one direction. The future is always unknown to us, while the past forever remains locked and inaccessible. And yet, the vast majority of the laws of ...