Why You're Stuck to the Ground

Why You're Stuck to the Ground

Have you ever wondered why you don't just float off your chair and drift into space right now? The reason is gravity, an invisible tug constantly pulling you down.

But here's the strange part. Gravity isn't just an Earth thing. Anything with mass pulls on everything else with mass.

That means right now, you are actually pulling back on the Earth! The Earth is just so massive that it easily wins the tug-of-war.

But here is the strange part: what if gravity isn't a pull at all? Einstein realized that empty space isn't just nothingness. It's a flexible, invisible fabric.

Imagine dropping a heavy bowling ball right in the middle of a trampoline. The fabric stretches and sags deep down. This is exactly what massive objects do to spacetime.

Now, roll a marble across that trampoline. It doesn't travel in a straight line; it curves around the dip. The marble isn't being pulled by an invisible string—it's just following the curved shape of space.

So if gravity is always pulling, why hasn't the Moon crashed into us yet?

Imagine throwing a baseball so fast that as it falls, the ground curves away beneath it at the exact same rate.

That is all an orbit is. The Moon is constantly falling toward Earth, but its sideways speed keeps it missing the ground forever.