space

Imagine this: As you drive down the highway at the speed limit in the right lane, another car races past you on the left then veers into your lane without warning. The other car then slows down until it is just feet in front of you, forcing you to make a quick decision to slow down, change lanes or even swerve off the road to the right to avoid a collision. Now imagine the same scenario involving two satellites orbiting 22,000 miles above the earth and traveling at 6,800 miles per hour.