Adventures Above: Exploring the Invisible Ocean in the Sky

One hundred tons of space dust and rock burn up in our sky every single day. A hundred TONS? But… where? All around us! Last time, Elara, we dug deep into the earth to find the bones of ancient giants. Today, our quest goes UP. Up where? It’s just… blue. And windy. That wind is the first clue. You are standing on the shore of the greatest, most invisible ocean in the world. And the tide is coming in. An invisible ocean? But I can breathe in it. I can’t breathe in the real ocean. Exactly! This ocean isn’t made of water.

It’s made of air. A special mix of gases that wrap our entire planet like a blanket. Mostly something called nitrogen — seventy-eight percent of it. And the part we need to live, oxygen, makes up another twenty-one percent. So we’re like… air-fish? We are! We are creatures of this deep, deep air-ocean. And like any ocean, it has currents. We just call them wind. Sometimes they’re a gentle breeze. Sometimes, they’re a raging storm. And see those? The clouds? Floating islands. Made of billions of tiny water droplets, all clinging together, drifting on the currents.

Come on. Our expedition is about to begin. But… how? With the most powerful vessel ever built. Your imagination. Close your eyes. We are lifting off the mountaintop. Rising now. Up, up, through the first layer of the sky, where all the weather happens. We drift right through one of those cloud-islands. It’s cool and damp, like a fog. Now we are above it, looking down on a sea of white. It’s so quiet up here. It is. But our journey isn’t just for sightseeing. This ocean is more than just currents and islands, Elara.

It is also a shield. A shield? From what? From outer space. Remember that hundred tons of rock and dust? Right now, they are screaming toward Earth, faster than a bullet from a gun. Most are no bigger than a grain of sand. But they are moving SO fast, they carry incredible, destructive power. Are they going to hit us? No. The ocean SAVES us. As they slam into our atmosphere, the friction — the rubbing against the air — gets so hot they burst into flame. They become shooting stars. Tiny, beautiful streaks of light that vanish before they can EVER reach us.

Whoa. So every time I see a shooting star… it’s the sky protecting us? It is. A shield made of invisible air. It also guards us from the sun’s harshest rays, like planetary sunglasses. It’s our protector, our blanket, and the very air we breathe, all at once. You can open your eyes now. We’re back on the mountaintop. It doesn’t look the same. It never will. You’ve journeyed through it. You know its secrets now. What do you see? I see… the shield. The currents. I can feel it. The wind isn’t just wind anymore.

It’s a current in the air-ocean. And that cloud… Yes? It’s not just a puff of white. It’s an island, floating in a sea of blue, just waiting to be explored.