The observable universe is vast, extending about 93 billion light-years across, containing galaxies, stars, planets, and all ...

But “infinity” means that, beyond the observable universe, you won't just find more planets and stars and other forms of material…you will eventually find every possible thing. Every. Possible.

So, what is beyond the observable universe? The obvious answer to this is a big "we don't know". In fact, we will never truly know as it is, by definition, unobservable.

The current width of the observable universe is about 90 billion light-years. And presumably, beyond that boundary, there's a bunch of other random stars and galaxies . But past that?

There’s a point in the universe where no light, no signal, and no matter can reach us — or so we thought. Galaxy clusters are drifting in one direction, as if pulled by something beyond our reality.

Beyond the observable universe lie “unknown unknowns”: the subject of speculation rather than direct observation. 1 The 45.7 billion light-year radius includes only light sources.

Road Trip 2010: CNET reporter Daniel Terdiman gets a behind-the-scenes look at the most complex planetarium show on Earth, and the complex astrovisualization that has been ten years in the making.

A controversial theory suggests the observable universe is the result of matter rebounding after the collapse of a black hole ...

The further we look into space, the further back in time we go and the last thing we see is left-overs from the Big Bang. This pattern in the sky could give us clues to the Universe next door.

Already, 94% of all the galaxies in the observable Universe are beyond our eternal reach. As vast as our observable Universe is and as much as we can see, it’s far more than we can ever ...