Just how much material did OSIRIS-REx collect from Bennu? The method relies on something called the moment of inertia, and you can replicate it with a fan and a penny.

But what about the moment of inertia? It might make more sense to also call this the rotational mass. It the property of the object that makes it more difficult to change the angular velocity.

Reaction Dynamics is a Canadian aerospace company reshaping access to space with a new generation of hybrid launch vehicles—ultra-responsive, reliable, and stockpiled solutions designed for ...