Why Planes Drop Stuff… But Jets Sometimes Don’t?!

追加: 2026-05-19

[00:00:00]I'm sure you've heard the news.

[00:00:02]Some planes leave big white streaks in the sky and others just don't. It's not magic, it's science. Let's break it down. Those white lines are called contrails, short for condensation trails. When planes fly high, their engines release hot water vapor into freezing air, turning it into tiny ice crystals.

[00:00:19]That's what makes those streaks.

[00:00:22]Jets and fighter planes sometimes fly lower or faster, so their trails disappear faster, making them look way sneakier.