Universe

China’s Five-Hundred-Meter Aperture Spherical Radio Telescope has detected more than 1,600 fast radio bursts from a single enigmatic system

Hints of a previously unknown, primordial form of the substance could explain why the cosmos now seems to be expanding faster than theory predicts

A chance celestial alignment is allowing astronomers to witness a distant star’s explosive death, again and again

Recent work has shown how “naked singularities” might defy the cosmic censorship conjecture

In trying to explain the spectacular star trails of the star cluster Palomar 5, astronomers stumbled on a very large trove of black holes.

The most haunting thing about the universe is how empty it is

It's not what you're probably thinking

The answer is a little more complicated than you might expect

Any good space opera needs to take place in a version of reality that, although not necessarily scientifically accurate, at least makes some kind of sense

A simple thought experiment that will shock the socks off you

Reality as we know it spans 63 orders of magnitude in scale, and now all of that is in one book

Even the Earth–sun system radiates gravitational waves, but just how powerful are they?