Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

Imagine embarking on a journey aboard a spaceship, heading in one direction as far as possible from Earth. Now, imagine that the spaceship can constantly accelerate up to the speed of light, and you ...

The universe stretches beyond anything we can truly comprehend, filled with galaxies, stars, and cosmic wonders. But what if there is actually an edge,a boundary beyond which nothing is known? This ...

Prologue: Cosmology's extraordinary new frontiers -- How far out can we see? : voyage to the edge of the known universe -- How was the universe born? : reavealing the dawn of time -- How far away will ...