gravity wave
gravitation wave

At one time many scientists said, and some still say, that there aren't such things as gravity waves.

Gravity waves are probably the best way to reach them.

"And the reason for the gravity wave that dragged us in?"

The acceleration is exactly what would be expected if the energy was being carried away by the gravity waves.

This is not the first search using spacecraft to look for gravity waves.

The coming gravity waves would make the joining a temporary one at best, but that could not be helped.

The importance of gravity waves was neglected within these models until the mid-1980s.

In fact, gravity waves were coursing through this space even as she sat here!

"This 'gravity wave,' as you call it, has always been enough for them."

This would result in a gravity wave, which the photons could ride.