HOW BIG GALAXIES ARE MADE
Nov 05, 2020
2 minutes
1 Big Bang
Around 13.8 billion years ago
The universe began in a vast explosion that gave rise to space, time and all matter. The Big Bang left behind large-scale differences in the distribution of both normal ‘luminous’ matter and the far more plentiful invisible ‘dark’ matter. Dense patches of matter formed the nuclei around which the first stars and
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