A teaspoon of neutron star material would weigh roughly a billion tons on Earth.




Neutron stars are some of the most extreme s in the universe, with densities that are almost impossible to comprehend. These ultra-dense remnants form when massive stars—at least 10 times the mass of the Sun—explode in a supernova and collapse under their own gravity, leaving behind a compact core just 10 miles (16 km) in diameter.

A neutron star’s material is packed so tightly that just a tablespoon of it would weigh over 1 billion tons (900 billion kg)—as much as an entire mountain like Everest. This extreme weight is due to the immense gravitational force within the star, which compresses protons and electrons into neutrons, held together by neutron degeneracy pressure.

To put this into perspective, a tablespoon of the Sun would weigh only about 5 pounds (2 kg), roughly the weight of a laptop. But neutron star matter is so dense that no normal container could hold it, and no human could lift it under Earth’s gravity.

Science