On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

Pop culture is saturated with franchises, and Swift is the master of creating them. But her marketing is beginning to ...

When discussing the scale of the universe, we’re immediately faced with an intriguing question: are we tiny beings, or is the ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Pulsars could be helping scientists distinguish between gravitational waves caused by supermassive black hole collisions and ...

We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ends, though, is an open question. The path forward depends on the ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...