Viking 2 was a very special spaceship that was built by the smart people on Earth a long time ago. It was sent on a big journey up into space to explore a faraway place called Mars, which is a planet that is next to Earth.
Viking 2 was made up of two parts: the orbiter and the lander. The orbiter is like a big camera that takes pictures and sends information back to the people on Earth. The lander is like a tiny spacecraft that was supposed to land on the surface of Mars and send back even more pictures and information.
When Viking 2 arrived at Mars, it started to take pictures of the planet and send them back to Earth. The people on Earth were able to see what Mars looked like up close for the very first time. They also used the orbiter to study the atmosphere of Mars and figure out what it was made of.
Finally, the lander was sent down to the surface of Mars. It was very cool because it was able to take even more pictures and do experiments to find out what the soil and rocks were like. The lander even had a special arm that could scoop up dirt and put it into little cups to study later on.
In the end, Viking 2 was able to send back a lot of really important information about Mars that has helped the people on Earth learn more about the planet. Even though Viking 2 is not exploring Mars anymore, it will always be remembered as a very important mission in space exploration history.