Planet Mars Astronomy, History and Mythology

The astronomy, history and mythology associated with Earth's red neighboring planet Mars, including perihelions and aphelions, a closer look at the planet, pink skies and blue sunsets.

ATMOSPHERE DENSITY. The "air" on Mars is about 10 times thinner than that on Earth and is composed almost entirely of carbon dioxide. Temperatures generally range from -120 degrees Fahrenheit nighttime lows to -20 degrees Fahrenheit daytime highs.