Possibility of extracting dense materials such as protons and neutrons from space

Based on the discoveries in the field of astrophysics, we know that there are stars and celestial objects in the universe that are made up of only fundamental particles such as protons or neutrons, which are much denser than an ordinary star and usually formed as a result of the explosion of a star. For example, one can refer to neutron stars or magnetars, which are made up only of neutrons, or proton stars (white dwarfs), which are usually formed as a result of the explosion of other stars, as well as black holes, which can be created as a result of the gravitational collapse of a massive star. The interesting point is that these objects are very dense, with a density of around 10¹⁶ (Kg/m³)