Expanding Universe Theory
It’s very difficult to be offensive when the fundamental concepts of space, time or matter —all born from a big bang— still throw even the greatest luminaries of science into bewilderment, and they rightly call everything and everyone into question.
Anyway, to resolve some doubts about matter, its creation and its conservation, you can read something about nucleosynthesis and Antoine Lavoisier’s law. In this post, however, I want to focus on the expanding universe theory. Don’t worry, I’m not an astrophysicist, so this will just be a little, amazing story (thanks to the protagonists, not for my grammar).
Theoretical physicists may bring back the stationary universe theory (no Big Bang and no inflation as we know them) and think that there is no expansion —which is replaced by an increase in mass of everything as the universe ages. But, according most cosmologists, that theory is just an interesting idea because currently it can’t be tested.
Instead, concrete evidence indicates that our universe, from whatever point you look at it, is expanding after the Big Bang, the galaxies are in motion and they are moving away.
But let’s start from the beginning.