One could say that the universe isn't expanding into anything because the question implies that something exists "outside" the universe, which is nonsensical, as "outside" is a spatially relative ...

It’s natural to wonder about the “edge” of the universe or what’s beyond it ... galaxies without necessitating an external “outside” to expand into. This concept, while abstract ...

So, what does this all mean? Well, outside of increasing our understanding of the vast and varied universe in which we live, it means we might be able to paint a better picture of how the universe ...

Languages: English. The largest-ever three-dimensional map of the cosmos, plotting out some 15 million celestial objects, could help reveal the ultimate fate of the universe. Astrophysicists know ...

The spins of some early galaxies could be a clue that the entire observable universe exists within a black hole—except, that ...