Water ice clouds hanging above Tharsis PIA02653 black background
Adjective(s) Martian
Orbital properties
Aphelion/apoapsis 249 209 300 km (about 1,665 AU)
Perihelion/periapsis 206 669 000 km (about 1,381 AU)
Semi-major axis 227 939 100 km (about 1,523 AU)
Orbital eccentricity 0.093
Orbital period 1,878 years (686 days)
Average orbital speed 24,077 km/s
Physical properties
Radius 3 396,2 km (equatorial); 3 376,2 (polar)
Mass 6,41 x 10^23 kg (0,107 earth masses)
Mean density 3,9335 g/cm³
Escape velocity 5,027 km/s
Rotation period 1,025 days (24,622 hours)
Average surface temperature 213,05 degrees Kelvin ( -60,1 °C)
Apparent magnitude +1.6 (minimum); -3.0 (maximum)
Moons 2

Mars is the fourth planet from the sun. It gets its red color from the iron oxide (rust) colored dust on its surface.


Ever since it was discovered, Mars has captured astronomers attention. Before it was explored, people thought aliens dug canals on its surface. After space exploration developed, humans sent rovers and satellites to Mars to find more about it. Scientists found possible fossils of microorganisms and frozen water at its poles.


Launched on November 26, 2011, Curiosity was sent to Mars to search for signs that life could have lived on Mars long ago.

MER (Spirit and Opportunity)

Spirit was launched on June 10, 2003 and Opportunity was launched on July 7, 2003. Each on opposite sides of Mars



See full articles Phobos and Deimos

Mars has 2 moons, Phobos and Deimos. These 2 moons are most likely asteroids captured by the asteroid belt. This is predicted because of the 2 satellites size is small, and there shape isn't spherical, so it would be plausible that the 2 moons were once asteroids. Phobos is the larger of the 2 moons.

Life on MarsEdit

The term Martian means a creature from Mars. Even though there isn't life on the surface of Mars today, there may be bacteria living under the surface.

There may have also been life on Mars long ago. Traces of flowing water have been found on Mars, making it possible that life similar to that on Earth could have lived there long ago.

It has also recently been theorized that life on Earth came from Mars 3.5 billion years ago via panspermia.


Statistic Name Statistic Calculation
Moons 2
Atmosphere Mainly carbon dioxide, also nitrogen
Density 3.93 g/cm³
Length of day About 24 hours


  • Mars has seasons because of its tilt, like the Earth.
  • Mars's highest peak is Olympus Mons. Olympus Mons is also the second highest mountain in the entire Solar System.
  • Mars is the least dense terrestrial planet.
  • Because Mars's density, it has the same gravitational pull as Mercury, despite the fact that Mars is larger than it.




Martian Moons
Phobos - Deimos
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