Which planet has seven hills named after the seven astronauts killed in the Columbia Space Shuttle mishap of 2004?

The planet which has seven hills named after the seven astronauts killed in the Columbia Space Shuttle mishap of 2004? is as follows. It is the fourth planet from Sun in the Solar System. The planet is named after the Roman god of war. It is often described as the “Red Planet”, as the iron oxide prevalent on its surface gives it a reddish appearance.

Answer: Mars