Solar Smash's big new update adds something Eon loves: the moon orbits the planet. He flips on slow mode to watch it properly — and then gets an idea.
What an orbit really is
When Eon launches the moon and it starts circling the planet, that loop is an orbit:
An orbit is the path one object travels as it goes around another. Our real Moon orbits Earth about once a month.
Why doesn't the moon fly away?
The moon keeps circling instead of shooting off into space because of gravity:
Gravity is the invisible pull between objects. The planet's gravity keeps tugging the moon, bending its path into a loop instead of a straight line. That balance — moving forward and being pulled in — is what makes an orbit.
The big experiment: two moons
Then Eon goes bold and launches a lot of moons — wondering what happens if Earth had two. The result? "Completely a mess… try to escape!" With two moons' gravity yanking on each other, orbits get chaotic.
Real Earth has exactly one Moon, and that steady single orbit gives us reliable tides and seasons. Add more, and the neat pattern breaks down — a great reason the solar system is arranged the way it is.
Try it
Swing a ball on a string in a circle — that's an "orbit," with the string standing in for gravity. Let go, and it flies off straight. The pull is what keeps it looping.