Summary:
- Neutron stars are the incredibly dense remnants of massive stars that have collapsed in on themselves. They are the densest known objects in the universe, aside from black holes.
- Observations of neutron stars in binary systems (where two neutron stars orbit each other) can provide valuable information about gravitational waves and the nature of gravity itself.
- By precisely measuring the tidal forces between the two neutron stars as they orbit each other, scientists can test Einstein's theory of general relativity and learn more about the structure and composition of neutron stars.