You might remember that we looked at some paradoxes when we studied special relativity earlier this term.  Here is another situation where a paradox can arise.  The German astronomer Heinrich Olbers (1758–1840) asked why the night sky was dark.  At the time, astronomers believed that the Universe was both infinite and steady state (unchanging), so ... <a title="evidence supporting the Big Bang model: 3. Olber&#8217;s paradox" class="read-more" href="https://mrmackenzie.co.uk/2021/11/evidence-supporting-the-big-bang-model-3-olbers-paradox/" aria-label="Read more about evidence supporting the Big Bang model: 3. Olber&#8217;s paradox">Read more</a>