“Most astrophysicists believe that the force holding stars and galaxies together – the thing that makes our whole universe work – comes from a theoretical substance we can’t measure or observe directly. Something they call dark matter. And this dark matter makes up most of the known universe.”

“Most astrophysicists believe that the force holding stars and galaxies together – the thing that makes our whole universe work – comes from a theoretical substance we can’t measure or observe directly. Something they call dark matter. And this dark matter makes up most of the known universe.”

— Blake Crouch