Not good news for some theories NASA's Goddard Space Flight Center/CI Lab

The simultaneous detection of gravitational waves and light from a cosmic collision has left a few theories of dark matter and dark energy dead in its wake. These theories require gravitational waves – ripples in the fabric of space-time – to travel slower or even faster than the speed of light. But recent observations have proved otherwise.

On 17 August, the LIGO collaboration saw gravitational waves from two cosmic objects that were spiralling towards each other. About 1.7 seconds later, NASA’s Fermi satellite detected a gamma-ray burst (GRB). The …