Wanting time alone and wanting connection can both be healthy. The trouble starts when we mistake depleted capacity for a ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

There is a lot we have yet to understand about the center of the Milky Way—could it be due to a mass of invisible dark matter?

The sharpest black hole collision ever detected just gave Einstein another win—and raised hopes that the next one might rewrite gravity.

In 1905, Albert Einstein revolutionized physics by demonstrating that time is not absolute but relative to the observer's ...

Quantum mechanics has always carried a quiet tension. At its core, the theory allows particles to exist in many states at ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

Needing space does not mean less love. It gives us the energy to stay present and keep our relationships healthy and alive.

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

In an effort to bring together the domains of gravity and quantum theory, Albert Einstein and Nathan Rosen proposed a ...

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

Scientists are now certain that James Webb will break every such record until the earliest observable light is eventually ...