Alfi said:
The concept of a "center" of the universe is a common misconception. The universe does not have a center because it is constantly expanding and there is no fixed point that everything is moving away from. Every point in the universe can be considered the center from that perspective.
The universe is most likely infinite in size. This means that it does not have an edge or boundary. However, the observable universe, which is the portion of the universe that we can see, is limited by the distance that light has been able to travel since the beginning of the universe.
The concept of "beyond the universe" is difficult to define because the universe encompasses all of space and time. Some theories suggest that there could be other universes or dimensions beyond our own, but there is currently no way to prove or disprove this.
The universe is currently expanding and has been since the Big Bang. This expansion is accelerating, meaning that the rate of expansion is increasing over time. There is no evidence to suggest that the universe will ever contract.
The current estimated age of the universe is around 13.8 billion years. This is based on observations of the cosmic microwave background radiation, which is the leftover glow from the Big Bang. However, this age is constantly being refined as new data and theories are developed.