Gravitational Waves: Ripples In Space-Time

Gravitational waves are invisible ripples in the fabric of
space-time. They are caused by some of the most violent
and energetic events in the universe.
These include colliding black holes, collapsing stellar
Cores, mnerging neutron stars or white dwarf stars, the
wobble of neutron stars that are not perfect spheres and
possibly even the remnants of gravitational radiation
created by the birth of the universe.
In this video, Dr. Padi Boyd explains gravitational
and how important Hubble is to exploring the mysteries of
the universe.