Mars

MartianCoordinatesplanet MarsRed PlanetMars orbitMars (Planet)opposition of MarsAreocentric orbitExploration of MarsGlobal Dust Storms on Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.wikipedia
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Mars surface color

reddish appearanceits surface colorred color of the surface of Mars
The latter refers to the effect of the iron oxide prevalent on Mars' surface, which gives it a reddish appearance distinctive among the astronomical bodies visible to the naked eye.
The surface of the planet Mars appears reddish from a distance because of rusty dust suspended in the atmosphere.

Solar System

outer Solar Systeminner Solar Systemouter planets
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal.

Moon

lunarthe MoonLuna
Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
The most widely accepted explanation is that the Moon formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia.

Moons of Mars

Martian moonsmoons2
Mars has two moons, Phobos and Deimos, which are small and irregularly shaped.
The two moons of Mars are Phobos and Deimos.

Phobos (moon)

PhobosShklovskyÖpik
Mars has two moons, Phobos and Deimos, which are small and irregularly shaped.
Phobos (,, ; systematic designation: Mars I) is the innermost and larger of the two natural satellites of Mars, the other being Deimos.

List of tallest mountains in the Solar System

tallest mountains in the Solar Systemhighest known mountainhighest known mountain in the Solar System
Mars is the site of Olympus Mons, the largest volcano and highest known mountain in the Solar System, and of Valles Marineris, one of the largest canyons in the Solar System.
At 21.9 km, the enormous shield volcano Olympus Mons on Mars is the tallest mountain on any planet in the Solar System.

Olympus Mons

Olympus MonsOlympus Mons (''Mount Olympus'')
Mars is the site of Olympus Mons, the largest volcano and highest known mountain in the Solar System, and of Valles Marineris, one of the largest canyons in the Solar System. The shield volcano Olympus Mons (Mount Olympus) is an extinct volcano in the vast upland region Tharsis, which contains several other large volcanoes.
Olympus Mons (Latin for Mount Olympus) is a very large shield volcano on the planet Mars.

Sun

solarSolThe Sun
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
Sol is also used by planetary astronomers to refer to the duration of a solar day on another planet, such as Mars.

Deimos (moon)

DeimosDeimos moonMars II
Mars has two moons, Phobos and Deimos, which are small and irregularly shaped.
Deimos (systematic designation: Mars II) is the smaller and outermost of the two natural satellites of the planet Mars, the other being Phobos.

Life on Mars

lifeMarsMartian conditions
There are ongoing investigations assessing the past habitability potential of Mars, as well as the possibility of extant life.
To date, no proof has been found of past or present life on Mars.

Asteroid

asteroidsminor bodyMinor Planet
These may be captured asteroids, similar to 5261 Eureka, a Mars trojan.
The vast majority of known asteroids orbit within the main asteroid belt located between the orbits of Mars and Jupiter, or are co-orbital with Jupiter (the Jupiter trojans).

Terrestrial planet

terrestrial planetsrockyrocky planet
Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars.

Valles Marineris

Valles Marinerisequatorial grand canyon
Mars is the site of Olympus Mons, the largest volcano and highest known mountain in the Solar System, and of Valles Marineris, one of the largest canyons in the Solar System.
Valles Marineris (Latin for Mariner Valleys, named after the Mariner 9 Mars orbiter of 1971–72 which discovered it) is a system of canyons that runs along the Martian surface east of the Tharsis region.

North Polar Basin (Mars)

Borealis BasinNorth Polar BasinMartian North Polar Basin
The smooth Borealis basin in the northern hemisphere covers 40% of the planet and may be a giant impact feature.
The North Polar Basin, more commonly known as the Borealis Basin, is a large basin in the northern hemisphere of Mars that covers 40% of the planet.

Impact crater

cratercratersimpact basin
Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Mars, Europa, Io and Titan, visible impact craters are less common because they become eroded, buried or transformed by tectonics over time.

Planet

planetsFormer classification of planetsplanemo
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four giant planets, Jupiter, Saturn, Uranus, and Neptune.

5261 Eureka

Eureka(5261) Eureka
These may be captured asteroids, similar to 5261 Eureka, a Mars trojan.
It trails Mars (at the ) at a distance varying by only 0.3 AU during each revolution (with a secular trend superimposed, changing the distance from 1.5–1.8 AU around 1850 to 1.3–1.6 AU around 2400).

Tectonics of Mars

tectonic
The core is surrounded by a silicate mantle that formed many of the tectonic and volcanic features on the planet, but it appears to be dormant.
Like the Earth, the crustal properties and structure of the surface of Mars are thought to have evolved through time; in other words, as on Earth, tectonic processes have shaped the planet.

Earth

Earth's surfaceterrestrialworld
Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the valleys, deserts, and polar ice caps of Earth.
A leading hypothesis is that it was formed by accretion from material loosed from Earth after a Mars-sized object, named Theia, hit Earth.

Mercury (planet)

MercuryMercurioplanet Mercury
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
Mercury's surface is more heterogeneous than either Mars's or the Moon's, both of which contain significant stretches of similar geology, such as maria and plateaus.

Utopia Planitia

UtopiaUtopia impact basinUtopia Planitia Fleet Yards
The volume of water ice in the south polar ice cap, if melted, would be sufficient to cover the entire planetary surface to a depth of 11 m. In November 2016, NASA reported finding a large amount of underground ice in the Utopia Planitia region of Mars.
It is the Martian region where the Viking 2 lander touched down and began exploring on September 3, 1976.

Athabasca Valles

Athabasca Vallis
The Athabasca Valles is home to sheet-like lava flows created about 200 Mya.
Athabasca Valles is a late Amazonian-period outflow channel in the central Elysium Planitia region of Mars, located to the south of the Elysium Rise.

NASA

National Aeronautics and Space AdministrationNASA Advisory CouncilU.S. space program
The volume of water ice in the south polar ice cap, if melted, would be sufficient to cover the entire planetary surface to a depth of 11 m. In November 2016, NASA reported finding a large amount of underground ice in the Utopia Planitia region of Mars.
Uncrewed programs launched the first American artificial satellites into Earth orbit for scientific and communications purposes, and sent scientific probes to explore the planets of the solar system, starting with Venus and Mars, and including "grand tours" of the outer planets.

Noachian

Noachian periodNoachian epoch3.8 billion years ago
The Noachian is a geologic system and early time period on the planet Mars characterized by high rates of meteorite and asteroid impacts and the possible presence of abundant surface water.

Tharsis

Tharsis bulgeTharsis regionTharsis Rise
The shield volcano Olympus Mons (Mount Olympus) is an extinct volcano in the vast upland region Tharsis, which contains several other large volcanoes.
Tharsis is a vast volcanic plateau centered near the equator in the western hemisphere of Mars.