gnostek1 / 20
- 01A neutron star packs 1.4 solar masses into a sphere roughly 20 km across.
- 02Its surface gravity is 200 billion times Earth's — a marshmallow dropped from 1 meter hits with nuclear-bomb force.
- 03The crust is so rigid that a 'starquake' of 1 mm releases more energy than the Sun emits in 100,000 years.