Team: Mars

1. Mars has a very thin atmosphere. It consists of 95% carbon dioxide (CO2), 3% nitrogen, and 1.6% argon (there is no oxygen). The atmospheric pressure is only a fraction of that on Earth (about 1% of Earth's atmospheric pressure at sea level), and it varies greatly throughout the year.

2. Size

2.1. It is about half the size of Earth and has a dry, rocky surface and a very thin atmosphere.

2.2. Mars is about 4,222 miles (6790 km) in diameter. This is 53% (a little over half) of the diameter of the Earth.

3. My Geistesblitzes

3.1. Information literacy

4. Mars, the red planet, is the fourth planet from the sun and the most Earth-like planet in our solar system.

5. The surface of Mars is dry, rocky, and mostly covered with iron-rich dust. There are low-lying plains in the northern hemisphere, but the southern hemisphere is dotted with impact craters. The ground is frozen; this permafrost extends for several kilometers.