Source of Mars Trojans Might Be Mars Itself

A new study proposes a source for the mysterious Mars Trojans: Mars itself.
An artist's conception of a Mars Trojan, ejected from the Red Planet.Polishook / Weizmann Institute of Science
It's one of the major mysteries of the inner solar system: How did Mars — a tiny world only a tenth the mass of Earth — capture its cluster of orbit-sharing Trojan asteroids?
Trojans are asteroids that co-orbit either ahead of a planet, at the L4 Lagrangian point, or behind it at the L5 point. These