Here's why:
* White Dwarf: A white dwarf is the collapsed core of a star that has exhausted its nuclear fuel. It is primarily composed of carbon and oxygen, with a density of about 1 million grams per cubic centimeter (1 million times denser than water).
* Neutron Star: A neutron star is formed from the collapse of a massive star (more massive than the Sun) during a supernova explosion. The immense pressure crushes the star's core, forcing protons and electrons to combine into neutrons. This creates a dense, ultra-compact object with a density of around 10^17 kg/m^3 (100 trillion times denser than water!).
In other words, a teaspoonful of neutron star material would weigh billions of tons!
Here's a simple analogy: Imagine squeezing a grapefruit down to the size of a marble - that's roughly the density of a white dwarf. Now, imagine squeezing that marble down to the size of a pinhead - that's the density of a neutron star!
