Powerful bright blue cosmic explosions called Luminous Fast Blue Optical Transients could be caused when a black hole or neutron star slams into the universe's hottest class of star.

Black holes slamming into scorching stars may be causing mysterious blue flashes in the cosmos

Source: space
Source Link: https://www.space.com/astronomy/black-holes/black-holes-slamming-into-scorching-stars-may-be-causing-mysterious-blue-flashes-in-the-cosmos