A neutron star’s density is mind-boggling. These stars are composed almost entirely of neutrons packed together in a tiny radius. Just a teaspoonful of this material would weigh over a trillion ...

As The Infinite Monkey Cage explores what we know about the subatomic particles that form our universe, we take a look at some of the freaky facts and ... make up around 5% of the universe.

There's a lot hiding in the universe's dark corners. Interstellar dust clouds and inky stretches of deep space can appear dull to ordinary telescopes. But to a car-size telescope 26 million miles ...