Neutron Stars – The Most Extreme Things that are not Black Holes

Neutron stars are formed when supergiant stars 15+ times the size of our sun collapse into themselves. When the fragile balance between the internal pressure from nuclear fission and gravity becomes unbalanced, gravity can force the core of supermassive stars to create a very strange type of matter - a matter formed when gravity so strong, it forces the electrons and protons of iron atoms together, forming neutrons, trillions of which get pushed denser and denser until a neutron star is born. Just a teaspoon of the material that comprises a neutron star would weigh 1 billion tons.