What is the fourth planet from the Sun?
Q: What is the fourth planet from the Sun?
A: The fourth planet from the Sun is Mars.
Q: Is Mars a terrestrial or gas giant planet?
A: Mars is a terrestrial planet.
Q: What are some features of Mars?
A: Some features of Mars include polar ice caps of frozen water and carbon dioxide, the largest volcano in the Solar System, and some very large impact craters.
Q: Why is it called "Mars"?
A: It is called "Mars" because it appears red in color, which was associated with war in Roman mythology.
Q: How do we explore Mars?
A: We explore Mars through space probes such as Viking program landers.
