"Up until today, we had been watching the sky," Szabi Marka, a professor of physics at Columbia University, and lead of Columbia's LIGO team, told Popular Science. "From tomorrow, we can also hear it." A researcher using LIGO to observe the universe, he suggested, is like a deaf person hearing music for the first time. "Can you imagine the joy?" he asked. "The world would change. This is what LIGO is to astrophysics."