From a split second after the Big Bang, it isn't just our subjective reality. Traces were left of everything that happened since that cataclysm. The universe expanded and is expanding still, and if you run it backwards in time there is nothing before then. Time (the fourth dimension, which we live comfortably in without noticing it) did not exist before that.
What happened after it took far longer than we imagine. See the timeline chart. The bare uninhabited earth (and all the other planets round all the other suns in the universe) coalesced from the meeting of fragments of whatever it was that blew up so spectacularly, and gradually weathered and changed until it became more or less as it is today. Fragments of dust and chemicals combined in the mix of hydrogen and oxygen that formed water until minute specks of life developed and themselves combined into more complicated organisms until there were plants. All this took more long eras of time. There were still no animals for a long time, and no humans until a lot later. We are animals, yes. We have animal bodies and our brains still have evidence of our animal origins.We have one special power - our ability to think abstractly and to communicate our thoughts to one another, and to record those thoughts so that they can be communicated directly to others even when we are not present. Right now we are doing exactly that online.
flexbooks.ck12.org/cbook/ck-12-middle-school-life-science-2.0/section/4.12/primary/lesson/timeline-of-evolution-ms-ls/
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