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 »

The composition of Mars' atmosphere is 95.32 percent carbon dioxide, 2.7 percent nitrogen, 1.6 percent oxygen and 0.08 percent carbon monoxide. The remaining 0.3 percent is made up of various trace elements. More »

Mars has a mean density of 3,933 kilograms per cubic meter, or 3.94 grams per cubic centimeter, according to NASA. By contrast, Earth has an average density of 5.51 grams per cubic centimeter. Mars is therefore only arou... More »

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

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 »

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 words "when the moon is in the seventh house, and Jupiter aligns with Mars" are lyrics from the song "Aquarius / Let the Sunshine In," popularized by the group The 5th Dimension. The song is a medley of songs origina... More »