Irena Sowinska/Stockimo/Alamy
MOST folks have in all probability heard that the universe is expanding. Certainly New Scientist readers have, as a result of I maintain writing about it on this column. It is maybe simple to just accept the assertion that the universe is expanding with out pondering too deeply about it. It is just a few bizarre physics indicating that, as time goes on, galaxies get additional away from one another. Or possibly you might have heard the outdated race automobile analogy, that galaxies transferring aside are like two automobiles racing away from one another.
I personally detest the race automobile analogy and like the balloon with barely magical …