Hey kiddo, do you know that there is a planet called Mars in our Solar System? Yes? Good! Did you know that scientists have found something really interesting on Mars? They have found some signs that suggest there might be some lakes under the surface of Mars.
You see, Mars is a very dry planet with a very thin atmosphere. It's so dry that you can't see any water on its surface. But scientists have been taking pictures of Mars for many many years and they have found some features that make them think there might be some hidden lakes under the surface.
When we look at Mars through a special camera, it shows us that there are some areas that are darker than others. These dark areas could be the signs of water. And if there is water, there could be life! Scientists are very excited about this because it means that we are one step closer to finding out if there is life on other planets.
But finding these lakes is not that easy, it requires a lot of work and research. Scientists use special instruments on orbiters to measure the temperature of Mars' surface. They then compare these temperatures to the temperatures under the surface. By doing this, they can figure out if there is water under the surface or not.
So, in conclusion, scientists think that Mars might have some hidden lakes under its surface. And if that's true, it would be a huge discovery for all of humanity. But to be sure that there are actual lakes on Mars, scientists need to do a lot more research and experiments.