Michael Mazur, of the Western Meteor Physics Group, said the fragments should weigh between 10 and a few hundred grams, maximum. Michael Mazur is knocking on doors in Grand Bend, Ont., hoping to find pieces of meteorite in the snow. It's rare to know the orbit of a piece of meteorite found on the ground, Mazur said. If they do find something, it could provide information about the origin of the solar system and how it evolved over time. "These rocks are 4.5 billion years old, the age of the solar system, and they do change with time.

Source: CBC News January 26, 2018 23:48 UTC