The European Space Agency made history when a space probe successfully landed on the surface of a comet 500 million km away from Earth.
It is a mission which has been decades in the planning.
Here are some top facts about the probe which was sent to the surface and the comet itself.
- Travelled 6.4 billion km (four billion miles) to reach the comet
- Journey took 10 years
- Planning for the journey began 25 years ago
- Is more than four billion years old
- Has a mass of 10 billion tonnes
- Is hurtling through space at 18km/s (40,000mph)
- Is shaped like a rubber duck