An Interesting thing about gravitational waves.
Gravitational waves carry the mass of the source they had been emitted from. We measure this gravitational waves by LIGO. The energy behind the stretching of the arms of the LIGO in form of gravitational waves comes from the neutron stars millions of light years away itself. And so the mass there is converted into energy and the same mass-energy is stretching and compressing the things here. This is really intriguing.
#gravitationalwaves #astrophysics