Countries involved in successful missions to Mars include the United States, Russia (formerly the USSR) and India. In addition to these countries, Japan and China launched several spacecraft towards Mars, but never succe... More »

Many photos have been taken of the surface of Mars. The first successful mission to take photographs of the Martian surface was the Mariner 4, a project launched in 1964 by the United States that sent back 21 images of t... More » Science Astronomy Planets

The exact cost of a Mars mission would depend on the nature of that mission, though most of them likely have a minimum price tag of hundreds of millions of dollars. An unmanned capsule such as SpaceX's Red Dragon could t... More » Science Astronomy Space Travel

The average temperature on Mars is -80 degrees Fahrenheit. A summer day near Mars' equator gets up to 70 degrees Fahrenheit, but dips to -100 degrees Fahrenheit at night. Winter temperatures at the Martian poles drop to ... More »

Because Mars with its famous red coloration is readily visible from Earth, it is unknown who first discovered it; NASA lists the planet as "known by the ancients." There are records of its existence as far back as ancien... More » Science Astronomy Planets

The surface temperature on Mars ranges from minus 225 degrees Fahrenheit to 70 degrees Fahrenheit. The average temperature is minus 81 F, which is much colder than the average Earth temperature of 57 F. More » Science Astronomy Planets

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 »