> Neutron stars are some of the densest objects in the Universe: they weigh about as much as the Sun, yet measure only around 10km across, similar in size to a

> Neutron stars are some of the densest objects in the Universe: they weigh about as much as the Sun, yet measure only around 10km across, similar in size to a large city. I'm going to be the Hacker News pedant here and say that this sentence bugged me. Weight is a measurement of force. Mass is the word they were looking for.