Time began. So we are told in the first phrase of our Torah. Today, the hard data of astronomers and physicists concurs. As impossible as it is to imagine, all we know of—space, time, the very nature of things—all has a beginning.
And it has a goal, an ultimate state. Every era, every event, every moment through which time passes is a step closer to that goal.
Likkutei Sichot, vol. 3, pp. 976–977, fn. 19; Likkutei Sichot, vol. 5, pp. 62–63; Bati Legani 5731:5