How did the Universe form?
Question asked by: dannyboy
Good question, and people have only just started to get a true idea of this in the last fifty years or so.
Current theory is that the universe started from a big bang. This was literally an explosion of matter from an extremely dense point, infact literally a singularity, and from that everything that we see around us now was blown out from that singular point.
Over a course of billions of years the consitutents of that explosion cooled and became more dense, and due to the action of gravity started to group together. This led to galaxies, stars and so on as we see all around us, and of course planets like the one we now live on.
As for what caused the big bang itself, and whether it makes sense to talk about time or what happened before the big bang, are still up for debate.
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