It takes 7 1/2 minutes for a signal to get from Earth to the spacecraft and another 7 1/2 minutes to get back. So, we can't joystick this spacecraft like a video game.

You've got the same problem as a car on Earth on a sheet of ice. There is very little friction between the wheels and the surface.

The rocky and rough surface of the asteroid was surprising. The 16-minute light travel time [between Earth and the spacecraft] makes real-time communications very difficult.

Sometimes, when the fragments break off, they flare up temporarily, but it usually doesn't last very long.

It's not gonna knock your socks off, and it certainly won't be the brightest object in the sky, but it'll be easily observable with the naked eye .

It looks as though some of the fragments are themselves forming their own sub-fragments.