Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole new model to account for gravity’s influence.

Astronomers found evidence that dark matter and neutrinos may interact, hinting at a "fundamental breakthrough" that ...

For decades, astrophysicists have wrestled with a basic but brutal question: how did black holes in the early Universe grow ...

In A Nutshell A black hole in the early universe is eating 13 times faster than a classic physics rule says is possible It’s ...

Our best models of the cosmos don't add up — but that could change if the universe is actually made of a viscous 'fluid,' a ...

Space is filled with a variety of objects, some blisteringly hot, some tremendously cold, but areas with little to nothing at ...

How many electrons are there in the Universe? One bold theory suggests that there could only be one, although this theory has ...

Nearly everything in the universe is made of mysterious dark matter and dark energy, yet we can’t see either of them directly. Scientists are developing detectors so sensitive they can spot particle ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

Delve into the detail of atomic physics. As the basic units of matter, atoms are the building blocks for everything in the universe. Once thought to be indivisible, we now know they can indeed be ...