Summary:
- After a supernova explosion, the star's core is left over.
- This material is extremely dense.
- What happens next depends on the core's mass.
- A neutron star is made almost entirely of neutrons.
- A black hole isn't a hole at all.
- It is the tremendously dense core of a supermassive star.
- Black holes are unimaginably dense.
- Not even light can escape their gravity (Figure below)!
- This is why they are black.
- We can't see black holes.
- Use the resources below to answer the questions that follow.