'Giant Arc' Stretching 3.3 Billion Light-Years Across the Cosmos Shouldn't Exist

The Universe Is Filled With Invisible Walls, Scientists Say

Researchers find what might be the most distant galaxy yet

What will happen when the Milky Way and Andromeda collide?

Largest Galaxy Ever Discovered Which is More than 100 times Bigger than Our Galaxy

Rapid star formation process due to collision between two galaxies