For most of my life, I’ve been interested in matters of scale — the extremes, from the unknowable vastness of our universe to ...

Since general relativitydescribes the large scale, or cosmological, structure of the universe, and quantum theory describes the microscopic, or subatomic, structures, the unification of these ...

Caltech researchers have mathematical evidence suggesting a Neptune-sized Planet X may exist deep in the solar system in an orbit far beyond Pluto. Planet X could have a mass about 10 times that of ...

Researchers have delved into this scenario: what would happen if a microscopic black hole encountered ... have formed in the first moments of the Universe, just after the Big Bang.

The Universe is vast, and primordial black holes (if they exist) are exceedingly rare. It is estimated that it would take billions of years for such an event to occur. Thus, although the idea of a ...