"We are only beginning to discover the true complexity of these worlds." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have used ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

One of the most awkward parts of writing a book is that, eventually, authors have to ask people for “blurbs” – the endorsements that you see on the cover of a book, encouraging you to buy it. I am now ...