Earth is the planet we live on, and it’s the only place in space that we know definitely sustains life.
In this section, you will find out more about the Earth.
The Sun sends light and heat to Earth, and because the Earth is round, only half of it is lit from the Sun at any time. The lit side is day, the unlit side is night, and day and night change for us because the Earth rotates, which takes one day.
We have seasons on Earth because it’s tilted, and takes a year to orbit the Sun.
An imaginary line goes around Earth at its widest point called the EQUATOR. North of this is the Northern Hemisphere, and south of it is the Southern Hemisphere.