Spaceship shield - Defend spaceships Starwars style

The samurai's had a large silk banner/cape's on their backs that inflated when they where riding on a horse. These capes where there to absorb arrows. When the riders rode away from the enemy, the capes filled up with pressurized air. When arrows hit this airbag the silk wrapped around the arrow and created friction that held onto the arrow. because of the pressure inside the bag the arrow was stopped. If the arrow came trough it had so little speed it could not penetrate the Armour. They called the cape a horo. What if we used similar technology on spaceships.

Horo

Horo/ballon Spaceship shield 

When a space shuttle has reached space it deploys a giant balloon around itself. This balloon is made out of the lightest and strongest materials currently available. Illustration only has one layer and the balloon would be much bigger. Graphene/spider/ silk or similar. The balloon reduces the necessary weight of the craft, because the shuttle won't need to resist impacts from stardust and small rocks. If a rock hits the balloon the impacts force gets spread out in the balloon, making it twist and twirl. some of the energy goes to the gas molecules and create heat. The impact force is spread out in time and surface area. It may also be possible to change larger slow bigger rock trajectories, instead of absorbing the blow. Because the balloon has near vacuum inside the rock does not penetrate the shield, because there is little counter force.

If a larger object is detected, to counter the larger force of the object the shuttle is able to change its location relative to the balloon in order to deflect impacts from different angles and avoiding unnecessary hits. The balloon can be filled with heat absorbing materials or gasses this will counter the low temperatures of space. In order to inflate the balloon extremely little gas is required in the vacuum of space.

One way of testing this technology on earth would be to use a normal balloon with a little air, and see how fast a projectile has to go before puncturing it. It should theoretically be much higher than in earth atmosphere.