How big is the universe? Based on what we can observe, the universe appears to be almost 28 billion light-years across. However, it is far larger than that.

So how big is the universe in the inflation model? It begs the question of what is going on at the boundaries and whether information could be communicated across universes.

With all of the commotion and intrigue surrounding the New Horizons spacecraft approaching Pluto, the BBC recently highlighted an incredible interactive piece they put together … ...

The universe is undoubtedly a big place. But just how big is it? "That may be something that we actually never know," Sarah Gallagher, an astrophysicist at Western University in Ontario, Canada ...

The universe is vast, beyond what we can truly comprehend. But how big is it, really? In this video, we explore the incredible size of the universe, from its observable limits to the theories that ...

The universe is a big place, but do we really know how big? Scientists think they do, and use an array of methods to figure it out. Here are our CliffNotes.

In 1916, Albert Einstein discovered that his theory of general relativity predicted the existence of gravitational waves — ...

The limit of our vision extends more than 46 billion light years in all directions. But how big was the Universe when it was first born?

Why is the observable universe so big? Here's why the universe’s size isn’t constrained by the speed of light.

The term ‘Big Bang’ might make you think of a massive explosion. Put the thought out of your head. Rather than an explosion, it was the start of everything in the universe.

Dark energy means that the Universe's expansion is accelerating. But how big will it get, and how fast?

So how big is the universe in the inflation model? It begs the question of what is going on at the boundaries and whether information could be communicated across universes. We suppose not.