Neutron stars are incredibly dense remnants of massive stars that have undergone supernova explosions. After a supernova, the core of the star collapses under gravity, compressing atomic nuclei to extreme densities. Neutron stars typically have masses greater than the Sun but sizes on the order of kilometers, making them incredibly dense. Their gravitational pull is so strong that a teaspoon of neutron star material would weigh billions of tons on Earth. Neutron stars emit radiation across the electromagnetic spectrum and are observed as pulsars when their magnetic poles align with Earth, emitting beams of radiation that appear as regular pulses. Neutron stars are fascinating objects that challenge our understanding of physics in extreme conditions.