yep -
from the Natural History Museum link which I've cited elsewhere in this thread -
Gravitational waves are energetic ripples of space traveling from massive objects in the cosmos. To measure one, do these things:
1. Get $365 million.
2. Find some very flat land, like in Louisiana.
3. Chop two 4 km long roads in an L shape through a swampy, snake-infested forest.
4. Accounting for the Earth’s curvature, pave the roads to within a few millimeters of absolutely straight.
5. Top each road with a 4 km long, 1.2 m wide steel tube.
6. Fit the tubes with precision instruments that have taken six years to design and construct.
7. Wait for a gravitational wave to hit. Could be in moments. Could be in decades. Adjust instruments in the meantime.
8. When the wave finally hits, the instruments will detect the space of the steel tube expanding or contracting a distance of one-hundred-millionth the diameter of a hydrogen atom. Just ignore any pesky sources of competing vibrations, like the logging across the street.
LIGO is currently trying to get a further $150 mil for upgrading to next-generation .. I don't remember where I saw that. You could find the references with a simple google search