From Newton’s falling apple to Einstein’s curved spacetime, our understanding of gravity has come a long way, yet this ...

Q: I am a 78-year-old man who’s about an inch and a half shorter than he used to be at one time. Why am I shrinking? A: We’re all getting shorter with age. Blame gravity. There are 23 discs between ...

Textbooks give strange, imprecise explanations of where things happen in quantum mechanics. Consistency with gravity needs a fresh approach.

Let’s talk about quantum gravity experiments that can be done here on Earth! If we discover how to connect quantum mechanics with general relativity we’ll pretty much win physics. There are multiple ...

For the second time in as many months, images gathered by the Hubble Space Telescope (HST) are raising questions about the structures of time and gravity, and the fabric of space. Using two HST images ...

From ancient Greek philosopher Plato to Neo, hero of the dystopian film fantasy The Matrix, humans have long pondered the true nature of reality. Can we trust what we see, taste, touch, smell, and ...

Two different worlds, they live in two different worlds. Twin planets — the posh Up Top and the gritty Down Below, connected by a TransWorld tower — face each other in such intimate proximity that the ...

What if gravity isn’t weirdly quantum at all, but rather … just a bit messy? The holy grail of theoretical physics is to find the long-sought theory of quantum gravity. But what if this theory is as ...

“He has always wanted to be a director,” reads the Internet Movie Database profile of Alfonso Cuar‪ón, “and also an astronaut.” Cuar‪ón’s double fantasy comes true—and another dream, the ...