Laser beams have gravity and can warp the fabric of the universe

Even though laser beams have no mass, they do have a tiny amount of gravity, which allows them to drag and warp space and slow down time as they propagate

Is space-time smooth or chunky?

LIGO (Laser Interferometric Gravitational-wave Observatory) - eoPortal

If space-time is a fabric, what is on the other side? - Quora

Understanding gravity—warps and ripples in space and time - Curious

If There Were a Time Warp, How Would Physicists Find It?

If Gravity is a result of space time warping, then why is space time warping downwards? - Quora

I wrote the book on warp drive. No, we didn't accidentally create a warp bubble., by Ethan Siegel, Starts With A Bang!

Astronomers edge closer to detecting background “sea” of gravitational waves

Black Holes: Seeing the Invisible! – NASA Universe Exploration