Topics he covered include adaptive optics , using lasers in astronomy to adjust for atmospheric turbulence , the detection of gravitational waves from colliding black holes by LIGO .
Why quantum entanglement does not allow faster - than - light communication .
Topics he covered include adaptive optics , using lasers in astronomy to adjust for atmospheric turbulence , the detection of gravitational waves from colliding black holes by LIGO , and why quantum entanglement does not allow faster - than - light communication .