The Mars Perseverance Rover is set to land on Mars at 4pm Eastern time today (2/18/2021). This is perhaps the trickiest Mars probe landing yet, specifically because we are aiming for difficult terrain. The lander has a heat shield which will slow the craft as it screams through the thin Martian atmosphere. Another instrument will determine the feasibility of producing oxygen from CO2 in the Martian atmosphere – testing the future habitability of Mars. This rover explicitly is designed to look for signs of ancient life, and to gather the information we need for a future human presence on Mars.