"Cocooned Dying Stars Could Emit Gravitational Waves, Study Shows"

'Cocoons' of debris around dying stars may be a new source of gravitational waves, according to a new study. When massive stars collapse to form black holes, their stellar material forms a cloud-like cocoon of debris, which is a potential source of gravitational waves that has never been investigated before. These elusive space-time ripples are also emitted by the universe's solo members and may even be powerful enough to be picked up by instruments on Earth.