Potentially dangerous comets could be spotted many years in advance by following the meteoroid trails they leave near Earth, new research shows.

'Crumb trails' of meteoroids could reveal potentially dangerous comets years before they reach Earth

Source: space
Source Link: https://www.space.com/the-universe/comets/crumb-trails-of-meteoroids-could-reveal-potential-planet-killer-comets-years-before-they-reach-earth