ELI5: Explain Like I'm 5

The Martians (scientists)

Martians are scientists who work on the planet Mars. They study the planet, the atmosphere and anything else related to it. They experiment with different tools and technologies to figure out the answers to questions about Mars. They also use their knowledge to help plan missions to the planet, and they give advice to other scientists and engineers on how to improve current technologies or create new ones. Hopefully, these efforts will eventually lead to a manned mission to Mars.