Time may be circular, but we might not be the beings in question of the last universe. Keep in mind that the Universe is not the entirety of our world, and also that the Big Bang in question may form before the entirety of the world is sucked in, and the galaxies which weren't sucked in would be affected by the blast. Also, we are still being forced out by the last bang at the exact same rate of all other things, if I remember right. The theory of the big bang was formed from the fact that we stared at a specific point, and at that point, everything seemed to be moving away from it at a fixed rate. Also keep in mind that Black Holes aren't holes at all, but merely appear to be holes as their force of gravity brings in light particles, and they cannot reflect out to reach our eyes. But what if it's not their strong gravity that does this? Allegedly, Black Holes also alter the flow of time within their vicinity. What could be at work here? We'll never know. Why would a black hole form an explosion?