Pretty impressive the neutron star stayed intact. It shows how dense the neutron star matter is. The neutron has the mass of 1.8 Suns compacted to an object the size of a city.
“They [Neutron Stars] have densities of 10^17 kg/m^3 [10 to the 17th power!], meaning that a teaspoon of neutron star material would weigh around a billion tons.”