Time. It is also a loop of ~42 trillion years.
Since energy cannot be created or destroyed, the first ~21 trillion years will end in 7 demises at the End of the first 7 planet cycles (also known as "Kali Yuga", or "the Ultimate Reality"). The next ~21 trillion years will end in 7 successive utopias during the next 7 planets' Kali Yugas, or the Ultimate Reality.
After that, Everything Ends… again.
And then begins yet another ~42 trillion year cycle, from the Beginning to the End. A minute for a minute. A second for a second.
No time is lost. It plays forever every ~42 trillion years.
Wasn't this simple? Time truly is GOD.