An asteroid called Florence passed ‘close’ to Earth on 1 September.
Asteroids are small, natural rocky bodies that travel around the Sun.
This one was discovered in 1981, and is named Florence after famous nurse Florence Nightingale.
At nearly 2.7 miles (4.4 kilometres) long it is the biggest one to come near the planet in 100 years.
It passed roughly 7 million kilometres away. That is about 18 times the distance from the Earth to the Moon.