Okay kiddo, let's talk about Rosalind Franklin and something called a rover. Rosalind Franklin was a very smart scientist who studied tiny things called molecules. She was really good at using special tools to look at these molecules very closely.
One day, some other scientists asked Rosalind to help them study a really important molecule called DNA. This is the thing that makes you, me, and everyone else look the way we do. It's like a set of instructions that tell your body how to grow and work.
So Rosalind got to work studying the DNA molecule using a special tool called X-ray crystallography. She spent a long time taking pictures of the molecule from different angles so that she could learn all about it.
Now, a rover is something that helps us explore and study other planets. It's kind of like a robot that drives around and takes pictures and samples of the ground and rocks.
The people who named the rover that recently landed on Mars wanted to honor Rosalind Franklin, since she did such important work studying and understanding molecules like DNA. So they decided to call the rover "Rosalind Franklin".
So now, the Rosalind Franklin rover is exploring Mars and sending back pictures and information so that scientists can learn more about what that planet is like. And we can all remember how smart and brave Rosalind Franklin was for studying molecules and helping us learn about ourselves and our world.