The facility is home to one of only two mega-lasers in the world. They're used to track disturbances in space with the help of gravity.
LIGO partnered with a local astronomy group to host the event. It will be the first time the earth will pass through the debris of this unnamed comet.
Dale Ingram runs the educational events at LIGO.
"What's going on in outer space that's so interesting that we just enjoy experiencing with the public," he said.
Doors open at 8:30 p.m. on Friday.
You can read more about how to find LIGO here on our website. Just go to the "KEPR TV" heading and click on "Newslinks."