The universe is full of wonders, but some worlds are downright deadly. From searing heat to violent storms, these planets make Earth look like a paradise. Many of them challenge everything we know ...

We currently know of more than 5,800 planets beyond the solar system, but we've only found the tiniest fraction of the exoplanets that astronomers think lie elsewhere in the universe.

For decades, astronomers have wondered what the very first stars in the universe were like. These stars formed new chemical ...

Astronomers have found planets that are twice as wide as Jupiter and more than 10 times as heavy, but there's a limit to how big planets can get.

For decades, astronomers have been working to explore the properties of the first generation of stars in the universe. These stars created new chemical elements, enriched the chemical composition of ...

HIGH above us in the distant reaches of space lie planets of every shape, size and colour. But just how many are in the universe, and what is the nearest planet to Earth?

"This black hole could then grow and consume the entire planet, turning it into a black hole with the same mass as the ...

In another universe, free-range planets could host life A tightly packed cosmos could provide habitable zones at galactic fringes ...

But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

For every Solar System like ours, there may be thousands of planets without stars to orbit.

HIGH above us in the distant reaches of space lie planets of every shape, size and colour. But just how many are in the universe, and what is the nearest planet to Earth?