Characters on Star Trek suffer frequent misadventures on the holodeck, a room that creates advanced holograms indistinguishable from reality. But now theoretical physicists such as Brian Greene, host of the recent PBS special The Fabric of the Cosmos, are starting to wonder if every object in the universe isn’t some sort of hologram.

“A hologram is a thin 2-D piece of plastic which, when illuminated correctly, yields a realistic three-dimensional image,” says Greene in this week’s episode of the Geek’s Guide to the Galaxy podcast. “The idea is, we may be that three-dimensional image of this more fundamental information on the 2-D surface that surrounds us.”

To read more, click here.