Exploring the Universe: Size, Expansion, and Mysteries Beyond

The universe is incredibly huge, much bigger than we can imagine.

It has trillions of stars and galaxies.

To get to Pluto, the edge of our solar system, would take thousands of years if you could travel at highway speeds.

Scientists can only see a part of the universe, which is called the observable universe.

The universe is constantly growing, and it's expanding because of a mysterious force called dark energy.

We've sent some objects into space, but we have only explored a tiny bit of what's out there.

There's still so much more to discover!