The universe contains roughly 2 trillion galaxies and countless mysteries, including dark matter, supermassive black holes, ...

In a new, detailed breakdown of current theory, a team of physicists led by Mir Faizal of the University of British Columbia ...

It's a plot device beloved by science fiction: our entire universe might be a simulation running on some advanced ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.