Neutron stars, formed when dying stars collapse into itself, are small and incredibly dense. About a kilometer below the surface of this type of star, atomic nuclei are squeezed together until they merge into a clump of matter thought to be shaped like blobs, tubes or sheets – which physicists lovingly referred to according to their pasta equivalents: gnocchi, spaghetti and lasagna.
Source: Nuclear Pasta: The Strongest Material in the Universe – Neatorama