...Our modern world would not be possible without aluminum. It is a metal that is both lightweight and strong. Aluminum is the primary metal used in all modern passenger jets in the air today. The same is true of the Space Shuttle and the International Space Station _ they would not be possible without aluminum. Cars often contain aluminum in the form of rims and engine blocks. We also find aluminum around the house in the form of beer cans, aluminum foil, frying pans, bicycles and folding lawn chairs. ..