The surface of Mars contains many unique features, including prominent shield volcanoes, large canyons and caves, pronounced depressions from wind and water erosion and polar caps. In addition to having these features, M... More » Science Astronomy

The surface gravity of Mars is 3.71 meters per second squared. Because Earth's gravity is 9.8 meters per second squared, Mars' gravity is approximately 38 percent less than the Earth's. Mars' mass is also less than Earth... More » Science Astronomy Planets

The Mars Curiosity rover has discovered that Martian soil is made up of about 2 percent water. The Mars atmosphere contains a small amount of water vapor, but the majority of Mars' water is believed to be trapped in the ... More » Science Astronomy Planets
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Mars and Earth both rotate around the sun, but at different speeds. Their location relative to each other is constantly changing, as demonstrated by simulations presented by Windows to the Universe. In order to determine... More » Science Astronomy

Mars is a terrestrial planet, which means it is made up largely of rock. Elements that make up the rock include silicon and different types of metal. More » Science Astronomy

Mars in Gemini is an astrological marker which signifies that the planet Mars was located in the constellation of Gemini at the time of birth. In astrology, Mars is said to reveal a person's basic animal nature including... More » Science Astronomy

Weathering creates underground caves and passages in limestone in addition to depressions and other unusual dips and grooves on the surface. Karst is landscape formed from the weathering of limestone. More » Science Earth Science Erosion & Weathering