Speaker: Dr Elizabeth Pearson – Sky at Night Magazine
How did we first measure the size of the Earth? Or the distance to the Moon? How did that help us find the distance to the nearest stars? As we learn how scientists and philosophers have measured the Universe throughout history, we’ll ask ‘how far away is that galaxy’ and get the answer ‘orange’.
Dr Elizabeth Pearson is Staff Writer for BBC Sky at Night Magazine and has a PhD in working out how far away very far away things are.