Some physicists think our reality is a kind of cosmic hologram, with space, time, and gravity as manifestations of a ...

Here’s a far fetched notion: for most of human history, humans used to worship gods who fought, fell in love, and even had favorite cities. Zeus might have thrown lightning bolts, but he was not ...

In 1929, an astronomer named Edwin Hubble stood atop Mount Wilson in California, peering into the night sky. What he s ...