Subject: Does LIGO even have a chance of finding gravity waves?

Say you are in a space ship with no windows or equipment for observing outside 
and you try to tell how fast you are going, even a significant portion of C. 
There is no measurement you can make that will tell you, is there? You could 
tell if you were being accelerated but that's all. Isn't that what LIGO is 
trying to do in a way. Would not the passing gravity wave affect the measuring 
devices, IE, laser wavelengths etc to make it impossible?
I value your answers and appreciate your time
Milton Wall

Re: Does LIGO even have a chance of finding gravity waves?