Science’s best guess at how the universe came into being includes the Big Bang followed by a moment of rapid inflationary expansion. However, this theory left a few mysteries and quirks in its ...

The Big Bang Theory explains how the universe began. The Big Bang Theory stands as the most widely accepted explanation for the origin of the universe. According to this theory, the universe began ...

Is our Universe really the only one? A new theory that hopes to solve one of the biggest problems in physics, may have rewritten our perception of time, and found a way through the Big Bang.

The mystery arose more than 20 years ago, when the Hubble Space Telescope spotted the universe's oldest known ... giving planets more time to form. Another theory is that the initial gas cloud ...

Another theory about the Universe, called the Steady State theory, says that the Universe has always existed, and that the Universe is expanding and constantly creating matter as it expands.