The desire to meet aliens has always been with me. But the more I have learned about the Universe, the more I believe that they are probably out there and the less I believe that I am likely to meet ...

Science fiction has long speculated about the possibility of first contact with an alien species from a distant world and how we might be able to communicate with them. But what if we simply don’t ...

In last week’s The Universe column, I fielded a reader’s question about galaxy collisions in an expanding universe. The answer deals with vast distances, inscrutable forces and the ultimate fate of ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing insight on the evolution of the universe. Galaxy clusters — the largest gravitationally bound structures in the universe — ...

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By rethinking gravity and cosmic timelines, it could rewrite our ...

Image of the newly discovered spiral galaxy Alaknanda (inset) as observed in the shorter wavelength JWST bands. Several bright galaxies from the foreground Abell 2744 cluster are also seen. A spiral ...