What happens to space after the Big Bang?

On the steady increase in all distances…

After the Big Bang which occurred about fourteen billion years ago, space is expanding. It is possible to visually imagine the expansion looking as a figure drawn on the surface of a balloon stretches while the balloon is inflating. The pace of expansion varies over time. Recent observations have shown that in our era, the expansion of space of the universe becomes more rapid. The expansion stretches distances, including the wavelength of light, but does not change sizes of galaxies and other structures that are bound gravitationally. In our days, the average speed of their recession is growing by 70 kilometers per second per Mpc increase in the distance between them.

Expansion of the universe increases the distance between galaxies

The greater the distance between galaxies, the faster they run apart.

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