Is 3I/ATLAS just a comet — or an intergalactic ark? A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which ...

A team of researchers using the James Webb Space Telescope has produced the most detailed map of dark matter to date.

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

The standard cosmological model (present-day version of "Big Bang," called Lambda-CDM) gives an age of the universe close to 13.8 billion years and much younger when we explore the universe at ...