‘Crumb trails’ of meteoroids could reveal potential ‘planet-killer’ comets years before they reach Earth
Comets that rarely swing past the sun could ram into our planet, but we could spot them using the “crumb”-like meteoroid trails they leave behind, a new study suggests. Many comets visit the solar system fairly often, at least on a cosmic timescale. Halley’s Comet, for instance, whizzes past Earth every 76 years, with its […]