One of the big mysteries of our solar system is whether there is or was life on Mars. Plenty of movies have been made about Martian invaders but so far it doesn't seem like there are any humanoid creatures on the planet. 

But a big new find by NASA's Perseverance rover is sparking big interest from scientists. Several rock samples were found to have organic material. Sunanda Sharma is a mission scientist at NASA's Jet Propulsion Laboratory.