How Does a Planet Stay in Orbit Around a Star?

Imagine a planet is like a ball being swung around on a string. The star pulls the planet toward it, that's gravity. But the planet keeps moving forward, just like you keep moving when you're on a swing. This balance between gravity and motion keeps the planet in orbit. It’s like playing tug-of-war with the sun, both are pulling, but neither wins!

Take the quiz →

Examples

  1. Imagine swinging around on a playground swing, you’re pulled down by gravity but keep moving forward.
  2. A ball tied to a string and spun in circles stays at a distance from the center because of its motion.
  3. You're like Earth, the Sun pulls you, but your sideways speed keeps you from falling straight in.

Ask a question

See also

Discussion

Recent activity

Nothing here yet.

Categories: Physics · Orbit· Gravity· Planets