the expansion of the universe

In fact, the universe has no center. Since the Big Bang happened 13.7 billion years ago, the universe has been constantly expanding.

According to the most accurate physical models today, the universe must surely collapse right after bulging from the Big Bang.

Well-known Australian astronomer Brian Schmidt, who won the Nobel Prize for Physics in 2011, predicts that the current universe will gradually disappear within 100 billion years.