DEFINITION

The fourth planet from the Sun, just past the Earth. Often called the 'Red Planet', due to its vivid colour.

• See the longest ever canyon system, stretching over 5,000km (3,100 miles)
• Visit the Solar System's largest volcano - over 50 times bigger than those on Earth
• Decide for yourself whether the Red Planet once contained life

NUMBER OF MOONS · 2

WHAT TO SEE