Paul Wiegert, an astronomy professor from The University of Western Ontario, answers the question: "How does a Trojan asteroid share Earth's orbit?"
Studying images compiled by NASA, an astronomer from The University of Western Ontario has proved the existence of the first Trojan asteroid found to share Earth's orbit. The findings of Paul Wiegert and his colleagues at Athabasca University and the Canada-France-Hawaii Telescope were featured as the cover story for the July 28 issue of distinguished journal, Nature.