So if our solar system is more or less flat in terms of the planetary rotations around the sun (I'm using typical pictorial depictions of the solar system), what is up and down from our solar system ...

Billions of years ago, in some forgotten corner of the Milky Way, a molecular cloud like many others collapsed to form new stars. One of them formed in relative isolation, collecting material in a ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...