Scientists have not yet proven that Mars can currently support life as we know it on Earth. Based on data from the NASA Exploration Rover, Mars may have been able to support life approximately 4 billion years ago.
As of 2015 there is no conclusive evidence that life on Mars exists or has ever existed, but scientists are hesitant to give a definitive answer without conclusive data. Most experts agree that it is theoretically possible that Mars could have life, but without evidence...
According to NASA, 7 billion years ago, Mars may have been an excellent place for microbes to live, but currently it cannot support life because the air is too thin and is comprised mainly of carbon dioxide. After drilling into the rocks on Mars, scientists discovered t...
Mars is made of basalt, feldspar, pyroxenes, olivine and other materials that form rocks. The abundance of iron oxide, or rust, in the soil gives it its reddish color. The alkaline soil contains substances such as magnesium, potassium, oxygen, salts and chlorine.
Mars is the second smallest planet in the solar system, with a diameter of just over 4,212 miles and a circumference of 13,256 miles. Its diameter is about 53 percent that of the Earth. Among the major planets, only Mercury is smaller.
Earth supports life because it is the correct distance from the sun, its composition is rock, it has a molten core, it gains protection from its atmosphere and it has water. There are approximately 500 planets in the Milky Way capable of supporting life.
Mars appears red due to the prevalence of rusted iron elements on its surface. The elements blow up into the atmosphere, intensifying the red color.