Okay kiddo, so a Mars Telecommunications Orbiter is like a big space robot that we send up to space to help us talk to things on Mars. Just like when we use our phones to talk to our friends, we need something to help us talk to our machines on Mars.
This orbiter is really special because it helps us send and receive messages from all the machines and people on the red planet. It has a lot of special equipment that helps it do its job, like antennas to send and receive messages, a big power system to keep it going, and special cameras to take pictures of the planet.
We use the orbiter to talk to rovers and robots that we've sent to explore Mars, and we can also use it to talk to people who are working on Mars missions. It's like a giant phone, but instead of calling someone across the country, we're calling someone across the universe!
So, thanks to the Mars Telecommunications Orbiter, we are able to learn a lot about Mars and all the cool things going on up there. Pretty neat, huh?