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 drilli... More »

Depending on the time of year and its position in the sky, Mars can be seen from Earth with the naked eye or in more detail with a small telescope. To the naked eye, Mars appears as a bright red star. With a telescope, o... More » Science Astronomy Planets

The cost of making the Mars Curiosity Rover was $2.5 billion, as stated by NASA. This includes the money spent for launch and operations as well as scientific research and spacecraft development, which came up to $1.8 bi... More » Science Astronomy Space Travel

According to, the atmosphere on Mars is around 100 times thinner compared to that of the Earth's and is composed of about 95 percent carbon dioxide. However, the Martian atmosphere is still thick enough to sust... 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' atmosphere is made mostly of carbon dioxide, with some nitrogen and argon. It has a very small amount of oxygen and carbon monoxide and tiny amounts of noble gases and other compounds. Earth's atmosphere is 100 tim... More » Science Astronomy Planets

NASA's primary mission for Mars is the search for life and elements, such as water, that could support life. NASA got its first close-range pictures of Mars in 1965. As of 2015, robot vehicles continue to send valuable i... More » Science Astronomy Planets