"Cosmic archaeologists" have discovered an iron-deficient second-generation star, which provides evidence of how ancient ...

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 discovery made by a large research team challenges the existing models of the universe.

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 ...

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