A pair of new telescopes are ready to look further into the dawn of our universe than we've ever seen before.

Light from alien worlds could have a telltale signal of a forest, hinting at an entire extraterrestrial ecosystem.

How do we know what happened billions of years ago in distant galaxies? Because physics only lets us see the past.

There's much more to whether a planet is habitable than its distance from a star...

The universe can kill you in a lot of ways. And all of them are amazingly entertaining...

Gas giants with an extremely eccentric orbit seem to have very wild and destructive years...

The concept of a habitable zone is useful, but too vague to mean much when we're looking for alien life.