Ask an Explainer
Why don't we see other planes in the sky when we're flying like drivers see other cars on the highway?
First of all, there are a lot less planes flying at once than there are cars driving on highways. Secondly, air traffic controllers work hard to be sure all planes in the sky have clear flightpaths, so you won't likely find two planes going the same place at the exact same time. You may be able to see another airplane in the sky when you're flying, but it will probably be pretty far away and moving in a different direction!