Not exactly. It can be protected from by a multi-layered whipple shield, kind of like what was proposed to protect spaceships from meteors. On the other hand,

Not exactly. It can be protected from by a multi-layered whipple shield, kind of like what was proposed to protect spaceships from meteors. On the other hand, it won't be something you can line a ship or a plane with, so yeah... Always shoot first.