1The gravitational pull of the black hole warped the fabric of spacetime around it, creating a phenomenon known as gravitational lensing.
2According to general relativity, the curvature of spacetime caused by massive objects such as planets and stars is a result of their gravitational fields.
3The gravitational waves emitted by the collision of two neutron stars were detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO) in 2017.
4The concept of gravitational redshift, which describes how light is shifted towards the red end of the spectrum as it escapes a region with a strong gravitational field, has been experimentally confirmed.
5In the context of cosmology, the gravitational attraction between matter and dark matter is thought to play a crucial role in the formation and evolution of galaxy clusters.