Скачать или смотреть The Science of Zero Gravity | How Astronauts Float in Space! 🚀🌌

The Science of Zero Gravity | How Astronauts Float in Space! 🚀🌌 Understanding Zero Gravity | The Science Behind Weightlessness in Space | How do zero-gravity planes work? | No Gravity | I Spent A Day in Zero Gravity

"Zero gravity" (or more accurately, "microgravity") refers to an environment where objects appear weightless. This phenomenon is commonly observed in space, where objects like the International Space Station (ISS) or satellites are in a continuous state of free fall towards Earth. However, due to their high speeds, they effectively fall around Earth, creating an orbit.

How It Works:
Gravitational Pull Exists: Despite the term "zero gravity," gravity is still present. For example, gravity at the ISS's altitude is about 90% as strong as on Earth's surface.
Free Fall Creates Weightlessness: Imagine being in a falling elevator. You and everything around you would feel weightless. Similarly, astronauts and objects in orbit feel weightless because they are in continuous free fall.
Perception of Zero Gravity: This state feels like zero gravity because there's no opposing force (like the ground) pushing up against you to create a sense of weight. In orbit, you float as if there is no gravity.
Microgravity Effects: Although gravity is present, it's not directly felt by objects in orbit. This affects fluids in the body, movement, and object orientation, leading to significant adaptations for humans and scientific experiments conducted in space.

In essence, zero gravity is more of a sensation than a true absence of gravity, experienced due to the orbital motion that keeps objects and people in a constant state of free fall, making them appear weightless.

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