Back to Glossary

Mars

Mars is the fourth planet from the Sun and the seventh largest in the Solar System. A cold, dusty desert world with a thin atmosphere (mostly CO₂), the planet features extinct volcanoes, deep canyons, polar ice caps, and seasons. Mars has two small moons (Phobos and Deimos), a day just over 24 hours long, and a year lasting about 687 Earth days. It is a prime focus of robotic exploration and studies about past water and habitability.

Source: science.nasa.gov

APODs including "Mars"

Close-up of the Face on Mars

14/12/2003

Close-up of the Face on Mars
Image Credit: NASA Astronomy Picture of the Day

Wouldn't it be fun if clouds were turtles? Wouldn't it be fun if the laundry on the bedroom chair were a friendly monster? Wouldn't it be fun if rock mesas on Mars were faces or interplanetary monuments? Clouds, though, are small water droplets, floating on air. Laundry is cotton, wool, or plastic, woven into garments. Famous Martian rock mesas known by names like the Face on Mars appear quite natural when seen more clearly, as the above recently released photo shows. Is reality boring? Nobody knows how clouds make lightning. Nobody knows the geological history of Mars. Nobody knows why the laundry on the bedroom chair smells like root beer. Understanding reality brings more questions. Mystery and adventure are never far behind. Perhaps fun and discovery are just beginning.