A neutron star compared with the skyline of Chicago. Neutron stars are about 12 miles in diameter and are extremely dense.
![Neutron Star Over Chicago](https://ciera.northwestern.edu/wp-content/uploads/2018/10/Chicago_Skyline_LARGE_v3_LowRes-1-1440x708-1024x503.jpg)
Credit: Nick Gertonson / Daniel Schwen / Northwestern / LIGO-Virgo
A neutron star compared with the skyline of Chicago. Neutron stars are about 12 miles in diameter and are extremely dense.
Credit: Nick Gertonson / Daniel Schwen / Northwestern / LIGO-Virgo