What does it mean to be to space-time? The seemingly simple question gets to the essence of twentieth-century physics and has driven a hundred-year debate between philosophy and science. In Einstein’s ...

Unfortunately, any work you do in the universe will have to be done the old-fashioned way. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There ...

Albert Einstein’s theory of gravity, general relativity, is famously incomplete. As proven by physics Nobel laureate Roger Penrose, when matter collapses under its own gravitational pull, the result ...