1. Tides in the sea are caused by the gravity of the Moon actually pulling the oceans towards it as it orbits the Earth.
2. Splat! Falling off a high mountain on the Moon is even worse than on Earth as there is no air resistance to stop you accelerating.
3. To escape the Earth’s gravity in a space ship, you would have to reach a speed of at least 11.2 km/s or you would be pulled back to the Earth with a bump!
4. Gravity’s inverse square law means that the reach of gravitational attraction is technically infinite.
5. There is gravitational force between you and every other single object in the universe.
6. Scientists are searching for gravitational waves. These are ripples in space-time that result from things like black holes colliding and stars exploding.
7. Gravity curves space-time. This means time itself passes slower in a stronger gravitational field compared to a weaker gravitational field.
8. The gravitational field strength on the surface of the sun is 274 N/kg. Forget the searing temperatures…you would be crushed into a puddle of goo!
9. Gravity at different places on the Earth isn’t always the same. This is because the Earth isn’t a perfect sphere and its mass is distributed unevenly.
10. One of the moons of Mars, Deimos, has such low gravity that if you jumped you would easily reach escape velocity and send yourself into space.